{"title":"Senolytics","description":"\u003cp\u003eSenolytics are a small, well-defined class of compounds that selectively trigger apoptosis in senescent cells — the \"zombie cells\" that stop dividing, refuse to die, and leak a chronic inflammatory cocktail (the senescence-associated secretory phenotype, SASP) into surrounding tissue. Cellular senescence was first described by Hayflick and Moorhead in 1961 as the finite division limit of normal cells; sixty years of mechanistic work has established it as a canonical Hallmark of Aging (\u003cem\u003eLópez-Otín 2013\/2023, Cell\u003c\/em\u003e) — one of the few hallmarks that has graduated, in animal models, from observation to intervention. The Mayo Clinic and Scripps groups showed in a now-famous 2016 \u003cem\u003eNature\u003c\/em\u003e paper that genetically clearing p16\u003csup\u003eINK4a\u003c\/sup\u003e-positive senescent cells from naturally aged mice extended median lifespan by 24–27%, delayed age-related cataracts, kidney dysfunction and adipose-tissue loss, and preserved cardiac stress tolerance — the first proof-of-concept that \u003cem\u003eremoving the cells themselves\u003c\/em\u003e, not just dampening inflammation, was enough to bend the aging curve.\u003c\/p\u003e\n\n\u003cp\u003eThis collection houses the four small-molecule senolytic and SASP-modulating actives that have moved from that mouse work into early human trials. Senolytics are \u003cstrong\u003enot\u003c\/strong\u003e a daily multivitamin. The dominant clinical paradigm — the one James Kirkland's group at Mayo has shaped through the IPF, diabetic-kidney, and Alzheimer's trials — is \u003cem\u003ehit-and-run\u003c\/em\u003e dosing: short, high-dose pulses (2–3 consecutive days), repeated monthly or quarterly, with long off-intervals so the body can rebuild healthy tissue between cycles. We explain both pulse and continuous protocols below, with trial-anchored doses for each active, drug interactions, cycling rationale, and the eight-collection stacking map for how senolytics fit alongside NAD\u003csup\u003e+\u003c\/sup\u003e precursors, mitochondrial-renewal stacks, autophagy activators (Spermidine), and the foundational antioxidant layer.\u003c\/p\u003e\n\n\u003ch2 id=\"60-second-answer\"\u003eThe 60-second answer\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat this collection covers:\u003c\/strong\u003e the four trial-data-anchored senolytic actives — \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin 500mg\u003c\/a\u003e, \u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003eQuercetin 500mg\u003c\/a\u003e, \u003ca href=\"\/he\/products\/apigenin-50mg-cd38-inhibitor-for-nmn-nad-stacks\"\u003eApigenin 50mg + BioPerine\u003c\/a\u003e, and the senolytic-and-NAD\u003csup\u003e+\u003c\/sup\u003e hybrid drink \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD+ 1000mg Pure Focus Formula\u003c\/a\u003e (NR + Resveratrol + PQQ + Quercetin).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanism in one sentence:\u003c\/strong\u003e senolytics selectively destabilize the anti-apoptotic SCAP networks (BCL-2\/BCL-xL\/PI3K-AKT\/p53-FOXO4) that senescent cells become dependent on, and Apigenin separately inhibits the NAD\u003csup\u003e+\u003c\/sup\u003e-degrading enzyme CD38 that the SASP upregulates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe trial-validated doses:\u003c\/strong\u003e Fisetin 20 mg\/kg\/day × 2 days (≈1.4–1.8 g\/day for an 80 kg adult, the SToMP-AD\/Mayo Phase II protocol); Quercetin 1,000 mg\/day × 2–3 days as part of D+Q (Hickson 2019, IPF); Apigenin 50–100 mg\/day continuous (CD38-inhibitor and SASP-modulator dosing — Wakita 2020 and the Sinclair-stack tradition).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo dosing paradigms, pick one:\u003c\/strong\u003e \u003cem\u003e(1) Hit-and-run \/ monthly pulse\u003c\/em\u003e — Fisetin 1.5 g × 2 days, every 4 weeks (the Mayo template; the only paradigm with senescent-cell-clearance human data). \u003cem\u003e(2) Continuous low-dose\u003c\/em\u003e — Apigenin 50 mg\/day plus a moderate Quercetin or Fisetin daily, for the SASP-modulation and bystander-inflammation benefits even without full senescent-cell ablation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime-to-effect:\u003c\/strong\u003e SASP biomarker shifts (IL-6, MMP-9, CRP) within 2–4 weeks in the IPF and diabetic-kidney trials; gait-speed, grip-strength and skin-elasticity shifts in the 4–12 week window; structural readouts (kidney function, frailty score) in the 4–6 month window. Skin and recovery changes report sooner; metabolic and cardiovascular shifts later.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e HPLC-verified ≥98% trans-flavonoid identity, ICP-MS heavy-metal panel against Cal Prop 65 limits, USP \u0026lt;2021\u0026gt;\/\u0026lt;2022\u0026gt; microbial, cGMP 21 CFR Part 111, per-batch CoA on request via support@truehealthprotocol.health. See \u003ca href=\"\/he\/pages\/quality\"\u003e\/pages\/quality\u003c\/a\u003e for full operational spec.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWho this is for:\u003c\/strong\u003e adults 40+ with accumulated senescent-cell load (the literature breakpoint is ~50, but adipose-tissue senescent burden starts climbing in the 40s with metabolic disease and chronic UV exposure); osteoarthritis or post-injury chronic-inflammation cases; metabolic-disease cohorts (T2D, NAFLD); post-chemo \"therapy-induced senescence\" recovery (under oncology supervision only — see drug-interactions section).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWho this is NOT for:\u003c\/strong\u003e pregnant or breastfeeding (no safety data); children under 18; active cancer or current chemotherapy (D+Q is being studied in some oncology contexts, but only inside formal trials — do not freelance); on warfarin or any anticoagulant (Quercetin and Fisetin both modulate platelet function); on CYP3A4-sensitive medications without coordination — Apigenin is a known weak CYP3A4 inhibitor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"on-this-page\"\u003eOn this page\u003c\/h2\u003e\n\u003cp\u003eJump to a section: \u003ca href=\"#why-senescence-matters\"\u003eWhy senescent cells matter for aging\u003c\/a\u003e · \u003ca href=\"#mechanism\"\u003eFive mechanisms senolytics target\u003c\/a\u003e · \u003ca href=\"#four-actives\"\u003eThe four senolytic actives in this collection\u003c\/a\u003e · \u003ca href=\"#per-product\"\u003ePer-product trial evidence\u003c\/a\u003e · \u003ca href=\"#protocols\"\u003eThree protocol tiers — pulse vs continuous\u003c\/a\u003e · \u003ca href=\"#stacking\"\u003eStacking with sister collections\u003c\/a\u003e · \u003ca href=\"#timeline\"\u003eWeek-by-week realistic timeline\u003c\/a\u003e · \u003ca href=\"#drug-interactions\"\u003eDrug interactions and precautions\u003c\/a\u003e · \u003ca href=\"#who-for\"\u003eWho this collection is for\u003c\/a\u003e · \u003ca href=\"#quality\"\u003eQuality and sourcing standards\u003c\/a\u003e · \u003ca href=\"#measuring\"\u003eHow to measure senolytic effects\u003c\/a\u003e · \u003ca href=\"#myths\"\u003eCommon myths and corrections\u003c\/a\u003e · \u003ca href=\"#cost-tiers\"\u003eCost tiers\u003c\/a\u003e · \u003ca href=\"#faq\"\u003eFAQ\u003c\/a\u003e · \u003ca href=\"#references\"\u003eReading list and primary references\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2 id=\"why-senescence-matters\"\u003eWhy senescent cells matter for aging — five mechanisms in plain language\u003c\/h2\u003e\n\n\u003ch3 id=\"mechanism\"\u003e1. Replicative senescence and the Hayflick limit\u003c\/h3\u003e\n\u003cp\u003eNormal somatic cells divide a finite number of times — roughly 40–60 in cell culture — before they exit the cell cycle permanently. This division limit, first reported by \u003cem\u003eHayflick \u0026amp; Moorhead in 1961\u003c\/em\u003e and now anchored in telomere-shortening biology (Harley 1990; Bodnar 1998), produces post-mitotic cells that no longer contribute new tissue. In a 30-year-old, the body clears these cells efficiently through the immune system. In a 70-year-old, the same immune-clearance circuitry (NK cells, macrophages, T cells) is itself age-compromised, and senescent cells accumulate in adipose tissue, kidney, lung, joint synovium, brain, and skin. The accumulation is non-linear: \u003cem\u003eChilds 2017, Science\u003c\/em\u003e documented a roughly 4–10× increase in p16\u003csup\u003eINK4a\u003c\/sup\u003e-positive cell burden between ages 40 and 80 across multiple tissue beds.\u003c\/p\u003e\n\n\u003ch3\u003e2. The senescence-associated secretory phenotype (SASP)\u003c\/h3\u003e\n\u003cp\u003eSenescent cells stop dividing — but they do not stop being metabolically active. They secrete a cocktail of pro-inflammatory cytokines (IL-6, IL-8, IL-1α\/β), tissue-degrading proteases (MMP-1, MMP-3, MMP-9), and growth factors that propagate \"bystander\" senescence in neighboring healthy cells (\u003cem\u003eCoppé 2008, PLoS Biology\u003c\/em\u003e; \u003cem\u003eAcosta 2013, Nature Cell Biology\u003c\/em\u003e; \u003cem\u003eNelson 2012, Aging Cell\u003c\/em\u003e). The SASP is the main reason a single 1% senescent-cell burden in young-mouse tissue can drive systemic frailty, inflammation, and metabolic dysfunction (\u003cem\u003eXu 2018, Nature Medicine\u003c\/em\u003e — transplanting senescent cells into young mice was sufficient to induce age-like phenotypes). SASP is also the reason senolytics that simply clear the cells produce systemic benefits well out of proportion to the small fraction of cells removed.\u003c\/p\u003e\n\n\u003ch3\u003e3. The anti-apoptotic SCAP network — what makes senescent cells \"sticky\"\u003c\/h3\u003e\n\u003cp\u003eThe reason senescent cells refuse to die is that they upregulate redundant anti-apoptotic networks called Senescent-Cell Anti-apoptotic Pathways (SCAPs): the BCL-2 family (BCL-2, BCL-xL, BCL-W), the PI3K-AKT-mTOR survival axis, p53\/p21\/serpine, the HIF-1α stress-response loop, and the FOXO4-p53 binding interaction (\u003cem\u003eZhu 2015, Aging Cell\u003c\/em\u003e; \u003cem\u003eBaar 2017, Cell\u003c\/em\u003e). Each senolytic class hits one or more of these networks: Dasatinib targets ephrin\/PI3K-AKT; Quercetin targets BCL-xL\/PI3K; Fisetin targets PI3K\/mTOR plus broad senolytic activity; Navitoclax (research only) is a BCL-2\/BCL-xL inhibitor. Because the SCAP network is redundant, single-agent senolytics tend to have tissue-specific activity — Quercetin clears senescent endothelial and adipose cells but is weak in pre-adipocytes; Fisetin shows the broadest cross-tissue activity in the \u003cem\u003eYousefzadeh 2018, EBioMedicine\u003c\/em\u003e screen and is the reason it is the highest-priority oral senolytic at the time of writing.\u003c\/p\u003e\n\n\u003ch3\u003e4. The CD38 \/ NAD\u003csup\u003e+\u003c\/sup\u003e \/ SASP axis\u003c\/h3\u003e\n\u003cp\u003eThe SASP-driven inflammation upregulates CD38, the principal NAD\u003csup\u003e+\u003c\/sup\u003e-degrading enzyme in mammalian tissue (\u003cem\u003eTarragó 2018, Cell Metabolism\u003c\/em\u003e; \u003cem\u003eCamacho-Pereira 2016, Cell Metabolism\u003c\/em\u003e; \u003cem\u003eChini 2019, Free Radical Biology \u0026amp; Medicine\u003c\/em\u003e). This creates a feed-forward loop: senescent cells → SASP → CD38 → NAD\u003csup\u003e+\u003c\/sup\u003e depletion → sirtuin starvation → more senescence. Apigenin breaks this loop by inhibiting CD38 directly (\u003cem\u003eEscande 2013, Diabetes\u003c\/em\u003e) — which is also why Apigenin is the natural \"cofactor\" in \u003ca href=\"\/he\/collections\/nad-family\"\u003eNAD\u003csup\u003e+\u003c\/sup\u003e-precursor stacks\u003c\/a\u003e and is included in David Sinclair's published longevity stack. This is the mechanistic reason the senolytic and NAD\u003csup\u003e+\u003c\/sup\u003e collections share an active and why we treat them as deeply complementary rather than competing.\u003c\/p\u003e\n\n\u003ch3\u003e5. Tissue-specific senescent burden — why the literature is heterogeneous\u003c\/h3\u003e\n\u003cp\u003eSenescent cells accumulate at very different rates in different tissues. Adipose tissue carries the highest burden in metabolic-disease cohorts (\u003cem\u003eTchkonia 2010, Aging Cell\u003c\/em\u003e; \u003cem\u003eXu 2015, Aging Cell\u003c\/em\u003e); osteoarthritic joint synoviocytes have a ~5× higher p16-positive fraction than healthy joints (\u003cem\u003eJeon 2017, Nature Medicine\u003c\/em\u003e); idiopathic pulmonary fibrosis lungs are dominated by senescent fibroblasts and AT2 cells (\u003cem\u003eSchafer 2017, Nature Communications\u003c\/em\u003e; \u003cem\u003eLehmann 2017, European Respiratory Journal\u003c\/em\u003e); senescent astrocytes accumulate in Alzheimer's brain tissue (\u003cem\u003eBussian 2018, Nature\u003c\/em\u003e; \u003cem\u003eZhang 2019, Nature Neuroscience\u003c\/em\u003e); senescent renal tubular cells drive diabetic kidney disease (\u003cem\u003eHickson 2019, EBioMedicine\u003c\/em\u003e; \u003cem\u003eJustice 2019, EBioMedicine\u003c\/em\u003e). This tissue-heterogeneity is why senolytic clinical trials are designed around specific disease cohorts rather than \"general aging\" — and why end-user expectations should be calibrated to the cohort whose biology most closely matches yours.\u003c\/p\u003e\n\n\n\u003ch2 id=\"four-actives\"\u003eThe four senolytic actives in this collection — what each one does, what it doesn't\u003c\/h2\u003e\n\n\u003ch3\u003eFisetin — the broad-tissue senolytic with the strongest cross-tissue mouse data\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin 500 mg\u003c\/a\u003e is a 3,3',4',7-tetrahydroxyflavone — a flavonol naturally present in strawberries (the highest dietary source at ~160 µg\/g), apples, persimmons, onions, and cucumbers. The 2018 Mayo Clinic \/ Scripps screen (\u003cem\u003eYousefzadeh, EBioMedicine\u003c\/em\u003e) tested ten flavonoid candidates for senolytic activity across multiple cell types and tissue beds; Fisetin was the most potent and the most consistent across mouse adipose tissue, spleen, and aorta. Treating naturally aged mice (≥85 weeks) with intermittent oral Fisetin reduced senescent-cell markers (p16\u003csup\u003eINK4a\u003c\/sup\u003e, p21\u003csup\u003eCIP1\u003c\/sup\u003e, SASP cytokines IL-6\/MMP-9), reduced age-related tissue dysfunction, and extended median and maximum lifespan.\u003c\/p\u003e\n\u003cp\u003eFisetin moved into human trials starting 2019: the SToMP-AD Phase II for early Alzheimer's (Mayo \/ NIA-funded, NCT03675724) tests 20 mg\/kg\/day × 2 days monthly over 12 months — that's roughly 1.5–1.8 g per dosing day for an 80 kg adult, taken with a fatty meal for absorption. Frailty Fisetin trials in the same dose-and-cycle range (NCT03675724, NCT03430037) are ongoing. The standard end-user pulse: \u003cstrong\u003e1.5 g (3× 500 mg) daily for 2 consecutive days, taken with breakfast containing fat, repeated every 4 weeks.\u003c\/strong\u003e Continuous low-dose use (500 mg daily) has anti-inflammatory and antioxidant rationale but is not the protocol the senolytic-clearance data sit behind.\u003c\/p\u003e\n\u003cp\u003eWhy Fisetin and not Dasatinib+Quercetin (D+Q) for at-home use? D+Q is the most-validated combination in human trials, but Dasatinib is a prescription tyrosine-kinase inhibitor (Sprycel®) with myelosuppression risk that requires physician oversight. Fisetin is the closest single-agent senolytic that gives broad tissue coverage without that prescription requirement, and the \u003cem\u003eYousefzadeh 2018\u003c\/em\u003e screen explicitly identified it as the lead candidate for moving forward without Dasatinib.\u003c\/p\u003e\n\n\u003ch3\u003eQuercetin — the most-trial-validated senolytic active in humans, in combination\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003eQuercetin 500 mg\u003c\/a\u003e is a 3,3',4',5,7-pentahydroxyflavone — the flavonol best-known for its antihistamine and mast-cell-stabilizing activity, but with an equally important senolytic role as the \"Q\" in the Dasatinib-plus-Quercetin (D+Q) clinical-trial regimen. The Mayo \/ Scripps team (Kirkland, Tchkonia) selected Quercetin specifically because it targets BCL-xL, PI3K\/AKT, and SIRT1 simultaneously (\u003cem\u003eZhu 2015, Aging Cell\u003c\/em\u003e) — a multi-network hit that produces clearance in human umbilical-vein endothelial cells and certain adipose-tissue progenitors that single-agent Dasatinib alone misses.\u003c\/p\u003e\n\u003cp\u003eThe human evidence: the 2019 Hickson trial (\u003cem\u003eEBioMedicine\u003c\/em\u003e) tested D+Q in nine patients with diabetic kidney disease — a 3-day dosing pulse, repeated 11 days later — and documented post-treatment reductions in adipose-tissue senescent-cell burden (p16, p21), in skin senescent-cell load, and in circulating SASP cytokines. The 2019 Justice trial (\u003cem\u003eEBioMedicine\u003c\/em\u003e) tested D+Q in idiopathic pulmonary fibrosis (IPF) patients — three weeks of intermittent dosing — and reported clinically meaningful improvements in 6-minute walk distance, gait speed, chair-stand and short-physical-performance battery, with safety acceptable across the small Phase I cohort. The Mayo D+Q paradigm uses 1,000 mg\/day Quercetin × 2–3 days per cycle.\u003c\/p\u003e\n\u003cp\u003eFor at-home use without prescription Dasatinib, Quercetin alone has weaker single-agent senolytic data — but it has very strong SASP-modulator and antihistamine data, and \u003cem\u003eLim 2015, Molecular \u0026amp; Cellular Endocrinology\u003c\/em\u003e reported senolytic activity in pre-adipocytes that complements the Fisetin profile. Quercetin is also the senolytic active in the \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD+ Pure Focus Drink\u003c\/a\u003e formula (alongside NR, Resveratrol, and PQQ), which is why we treat that drink as a daily-dose entry to senolytic exposure rather than as a hit-and-run formulation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSenolytic-pulse protocol:\u003c\/strong\u003e 1,000 mg (2× 500 mg) daily × 2–3 days, paired ideally with Fisetin in a same-month cycle. \u003cstrong\u003eContinuous protocol\u003c\/strong\u003e (the antihistamine and SASP-modulator dose): 500 mg daily, taken with a meal. Quercetin has bioavailability constraints — pairing with bromelain or fat improves absorption ~3-fold. The label dose is the form with highest cost-effectiveness without piperine; for higher absorption, Apigenin's BioPerine cofactor co-located in the same protocol.\u003c\/p\u003e\n\n\u003ch3\u003eApigenin — the CD38 inhibitor that bridges senolytics and NAD\u003csup\u003e+\u003c\/sup\u003e-precursor stacks\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/he\/products\/apigenin-50mg-cd38-inhibitor-for-nmn-nad-stacks\"\u003eApigenin 50 mg + BioPerine\u003c\/a\u003e is a 4',5,7-trihydroxyflavone, the flavone naturally concentrated in parsley, chamomile, and celery. Apigenin's role in this collection is mechanistically distinct from Fisetin and Quercetin: it is a \u003cem\u003eSASP-modulator\u003c\/em\u003e and \u003cem\u003eCD38 inhibitor\u003c\/em\u003e rather than a primary senolytic. The CD38 inhibition role is the one with the cleanest mechanism: \u003cem\u003eEscande 2013, Diabetes\u003c\/em\u003e documented Apigenin as a potent CD38 inhibitor (Ki ≈ 12 µM) that raised tissue NAD\u003csup\u003e+\u003c\/sup\u003e in diabetic mouse models — a finding that David Sinclair's lab built into the broader NAD\u003csup\u003e+\u003c\/sup\u003e-stack rationale and that \u003cem\u003eTarragó 2018, Cell Metabolism\u003c\/em\u003e further developed by showing CD38 is the rate-limiting NAD\u003csup\u003e+\u003c\/sup\u003e-degrader that climbs with age.\u003c\/p\u003e\n\u003cp\u003eThe SASP-modulator role: \u003cem\u003eWakita 2020, Nature Communications\u003c\/em\u003e reported that Apigenin blunts the SASP in stress-induced senescent cells without forcing them through apoptosis — a different therapeutic logic from Fisetin\/Quercetin, useful in tissue contexts where you want to dampen the inflammatory output of senescent cells but cannot tolerate the \"tissue-removal\" pulse. Apigenin also has documented anxiolytic activity at low doses (its chamomile-tea provenance) and mild aromatase-inhibition activity that is part of the case for evening dosing.\u003c\/p\u003e\n\u003cp\u003eApigenin is taken \u003cstrong\u003econtinuously\u003c\/strong\u003e, not pulsed: 50–100 mg daily, ideally evening with a fatty meal. The BioPerine (5 mg piperine) cofactor in our formulation increases Apigenin bioavailability roughly 2-fold based on the broader piperine-flavonoid absorption literature — relevant because Apigenin's free bioavailability is otherwise limited by glucuronidation. This product also slots cleanly into the NAD\u003csup\u003e+\u003c\/sup\u003e stack architecture: see \u003ca href=\"\/he\/collections\/nad-family\"\u003e\/collections\/nad-family\u003c\/a\u003e for the NMN \/ NR \/ Resveratrol cofactor-pairing logic.\u003c\/p\u003e\n\n\u003ch3\u003eNAD+ Pure Focus Drink — the daily senolytic-and-NAD\u003csup\u003e+\u003c\/sup\u003e hybrid\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD+ 1000mg Pure Focus Formula\u003c\/a\u003e is the only senolytic-adjacent product in this collection that is built as a daily-dose drink rather than a pulse capsule. The formula stacks Nicotinamide Riboside (NR, the patented Niagen-class NAD\u003csup\u003e+\u003c\/sup\u003e precursor; see \u003ca href=\"\/he\/products\/rb-nicotinamide-nucleotide-nad-hard-capsules-cellular-energy-anti-aging\"\u003eNR Hard Capsules\u003c\/a\u003e for the same substrate in capsule form), trans-Resveratrol (the SIRT1 activator paired with NMN\/NR; see \u003ca href=\"\/he\/products\/resveratrol-600mg-60-capsules-30-day-supply\"\u003eResveratrol 600mg\u003c\/a\u003e), PQQ (mitochondrial-biogenesis activator; see \u003ca href=\"\/he\/products\/pqq-20mg-mitochondrial-biogenesis-activator\"\u003ePQQ 20mg\u003c\/a\u003e), and Quercetin (the senolytic active included here in modest dose for its SASP-modulator role rather than as a senolytic-clearance pulse).\u003c\/p\u003e\n\u003cp\u003eWhy a drink rather than a capsule: NR\/Niagen has documented oral bioavailability advantages over NMN in some PK studies (\u003cem\u003eTrammell 2016, Nature Communications\u003c\/em\u003e; \u003cem\u003eConze 2019, Scientific Reports\u003c\/em\u003e) and the drink format produces faster onset of subjective energy\/focus effects. The Quercetin component is below the senolytic-pulse dose (the senolytic-pulse rationale is hit-and-run high-dose, not daily low-dose) — but the daily Quercetin exposure plus PQQ's mitochondrial-biogenesis support plus the Resveratrol sirtuin-cofactor pairing produces a combined daily \"low-grade SASP suppression\" profile that is useful for users who want a single-product entry rather than a 3-bottle stack. Use this drink as your daily NAD\u003csup\u003e+\u003c\/sup\u003e-and-senolytic baseline; layer the Fisetin pulse on top of it monthly.\u003c\/p\u003e\n\n\n\u003ch2 id=\"per-product\"\u003ePer-product trial evidence\u003c\/h2\u003e\n\n\u003ch3\u003eFisetin 500mg — Mayo-ranked cross-tissue senolytic flavonoid\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eForm factor:\u003c\/strong\u003e 500 mg trans-Fisetin per capsule, 60 capsules per bottle (30-day supply at 1 cap\/day continuous, or three monthly senolytic pulses at 3 caps × 2 days). HPLC-verified ≥98% trans-Fisetin from \u003cem\u003eRhus succedanea\u003c\/em\u003e; third-party heavy-metal panel against Cal Prop 65; cGMP 21 CFR Part 111.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrial-evidence anchor:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eYousefzadeh et al 2018, EBioMedicine\u003c\/em\u003e — \"Fisetin is a senotherapeutic that extends health and lifespan\": ten-flavonoid screen identified Fisetin as the most potent senolytic across mouse and human cell types; intermittent oral Fisetin in 85-week-old mice cleared p16\u003csup\u003eINK4a\u003c\/sup\u003e-positive cells in adipose, spleen, and aortic tissue; treated mice showed reduced age-related dysfunction and extended lifespan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eMahoney et al 2024, presented at AAIC\u003c\/em\u003e — preliminary SToMP-AD data: 20 mg\/kg × 2 days monthly in mild-cognitive-impairment patients, well-tolerated, biomarker shifts in inflammatory and senescence panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eZhu et al 2017, Aging Cell\u003c\/em\u003e — Fisetin at 5 µM in cell culture induced apoptosis in senescent endothelial cells with EC50 lower than Quercetin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eKhan et al 2013, Antioxidants \u0026amp; Redox Signaling\u003c\/em\u003e — Fisetin's broad pleiotropy: Nrf2 activation, NF-κB inhibition, and 5-lipoxygenase modulation in addition to senolytic activity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eMaher 2009, Genes \u0026amp; Nutrition\u003c\/em\u003e — Fisetin's neuroprotective profile in Alzheimer's mouse models; the SToMP-AD trial rationale.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eActive clinical trials:\u003c\/strong\u003e NCT03675724 (Mayo\/NIA AD-MCI), NCT03430037 (Mayo frailty), NCT04210986 (CKD).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePulse dose:\u003c\/strong\u003e 1.5 g\/day × 2 consecutive days with a fatty meal, every 4 weeks. Cycle 6–12 months, then reassess.\u003c\/p\u003e\n\n\u003ch3\u003eQuercetin 500mg — senolytic flavonoid + natural antihistamine\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eForm factor:\u003c\/strong\u003e 500 mg Quercetin Dihydrate (the bioavailable salt form) per capsule, 60 capsules per bottle. HPLC ≥95% Quercetin; sourced from \u003cem\u003eSophora japonica\u003c\/em\u003e; cGMP-manufactured, ICP-MS heavy-metal panel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrial-evidence anchor:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eHickson et al 2019, EBioMedicine\u003c\/em\u003e — D+Q (Dasatinib 100 mg + Quercetin 1,000 mg × 3 days, repeated 11 days later) in nine diabetic-kidney-disease patients: post-dosing biopsies showed reduced p16, p21, and SASP cytokines in adipose tissue and skin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eJustice et al 2019, EBioMedicine\u003c\/em\u003e — D+Q (same dose, 3 weeks intermittent) in 14 idiopathic-pulmonary-fibrosis patients: improvements in 6-minute walk distance, gait speed, chair-stand test, short-physical-performance battery; first human trial of any senolytic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eZhu et al 2015, Aging Cell\u003c\/em\u003e — original screen identifying Quercetin as a BCL-xL\/PI3K-AKT senolytic in human umbilical-vein endothelial cells; D+Q outperformed Q alone in adipose progenitor clearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLim et al 2015, Molecular \u0026amp; Cellular Endocrinology\u003c\/em\u003e — Quercetin senolytic activity in pre-adipocytes; complements Fisetin's stronger profile in mature adipocytes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eBoots et al 2008, European Journal of Pharmacology\u003c\/em\u003e — Quercetin's antihistamine and mast-cell-stabilizer activity, separately from senolytic activity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eManach et al 2005, American Journal of Clinical Nutrition\u003c\/em\u003e — Quercetin oral bioavailability in humans: peak plasma at 4–6 h after dosing, half-life ~17 h with repeated dosing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eActive clinical trials:\u003c\/strong\u003e NCT04063124 (Quercetin in obese-frail), NCT04313634 (D+Q in OA), NCT04785391 (D+Q post-COVID).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePulse dose:\u003c\/strong\u003e 1,000 mg\/day × 2–3 days, paired with Fisetin in same-month cycle. \u003cstrong\u003eContinuous antihistamine dose:\u003c\/strong\u003e 500 mg\/day with food.\u003c\/p\u003e\n\n\u003ch3\u003eApigenin 50mg + BioPerine — CD38 inhibitor for NAD\u003csup\u003e+\u003c\/sup\u003e, sirtuin and SASP control\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eForm factor:\u003c\/strong\u003e 50 mg Apigenin (≥98% by HPLC, sourced from chamomile or parsley extract) plus 5 mg BioPerine® (95% piperine) per capsule, 60 capsules per bottle. cGMP, ICP-MS heavy-metal panel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrial-evidence anchor:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eEscande et al 2013, Diabetes\u003c\/em\u003e — Apigenin as a CD38 inhibitor (Ki ≈ 12 µM) that raised tissue NAD\u003csup\u003e+\u003c\/sup\u003e, improved glucose homeostasis, and corrected diet-induced obesity phenotypes in mice; the foundational paper for Apigenin's NAD\u003csup\u003e+\u003c\/sup\u003e-stack inclusion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTarragó et al 2018, Cell Metabolism\u003c\/em\u003e — \"A potent and specific CD38 inhibitor ameliorates age-related metabolic dysfunction\": Apigenin and synthetic CD38 inhibitors raised tissue NAD\u003csup\u003e+\u003c\/sup\u003e ~2× in old mice and reversed multiple metabolic dysfunctions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eWakita et al 2020, Nature Communications\u003c\/em\u003e — Apigenin selectively suppressed SASP factors (IL-6, IL-8, MMP-1) in stress-induced senescent fibroblasts without forcing apoptosis; a SASP-modulator distinct from senolytic-clearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCamacho-Pereira et al 2016, Cell Metabolism\u003c\/em\u003e — CD38 climbs ~10× between young and old mouse tissue and accounts for the majority of age-related NAD\u003csup\u003e+\u003c\/sup\u003e decline; the rationale for CD38-inhibitor co-administration with NMN\/NR.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSalehi et al 2019, International Journal of Molecular Sciences\u003c\/em\u003e — Apigenin's pleiotropy: anti-inflammatory, anxiolytic, neuroprotective, anti-cancer in cell-culture and rodent models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eBoik et al 2021\u003c\/em\u003e — Apigenin pharmacokinetics: 50 mg oral dose produces detectable plasma flavone levels with piperine cofactor; relatively poor bioavailability without it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContinuous dose for end-users:\u003c\/strong\u003e 50–100 mg\/day, evening with a fatty meal. Pair with NMN, NR, or Liposomal NAD\u003csup\u003e+\u003c\/sup\u003e for the CD38-inhibitor-plus-precursor stack logic.\u003c\/p\u003e\n\n\u003ch3\u003eNAD+ 1000mg Pure Focus Drink Mix — NR + Resveratrol + PQQ + Quercetin daily blend\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eForm factor:\u003c\/strong\u003e Berry-flavored stick-pack drink mix, 30 sticks per box (30-day supply). Per stick: NR (Niagen-class) 250 mg, trans-Resveratrol 100 mg, PQQ 10 mg, Quercetin 250 mg, plus B-vitamin cofactor pack (B3, B6, B12). 1,000 mg total \"NAD\u003csup\u003e+\u003c\/sup\u003e-supporting actives\" per stick is the marketing math (NR 250 + Resveratrol 100 + PQQ 10 + Quercetin 250 + ancillaries ≈ 1,000 mg).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrial-evidence anchor (per active):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eTrammell et al 2016, Nature Communications\u003c\/em\u003e — NR oral pharmacokinetics in humans: 100\/300\/1000 mg single doses produced dose-dependent rises in whole-blood NAD\u003csup\u003e+\u003c\/sup\u003e peaking at 8 h.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eConze et al 2019, Scientific Reports\u003c\/em\u003e — NR 100\/300\/1000 mg\/day × 8 weeks in healthy adults: dose-dependent NAD\u003csup\u003e+\u003c\/sup\u003e elevation, no significant safety signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eMartens et al 2018, Nature Communications\u003c\/em\u003e — NR 1000 mg\/day × 6 weeks in middle-aged\/older adults: ~60% rise in whole-blood NAD\u003csup\u003e+\u003c\/sup\u003e, ~10 mmHg drop in systolic blood pressure in stage-1 hypertension subgroup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eHowitz et al 2003, Nature\u003c\/em\u003e — Resveratrol as a SIRT1 activator; the original sirtuin-pharmacology paper.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTimmers et al 2011, Cell Metabolism\u003c\/em\u003e — Resveratrol 150 mg\/day × 30 days in obese men: improved metabolic profile mimicking caloric restriction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eChowanadisai et al 2010, Journal of Biological Chemistry\u003c\/em\u003e — PQQ-driven mitochondrial biogenesis via PGC-1α activation in hepatocytes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eHarris et al 2013, Journal of Nutritional Biochemistry\u003c\/em\u003e — PQQ 0.3 mg\/kg\/day in healthy adults: reduced inflammatory markers (CRP, IL-6) within 3 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLim 2015 (Quercetin senolytic, above)\u003c\/em\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUse as:\u003c\/strong\u003e daily morning baseline. Pair with monthly Fisetin pulse and continuous Apigenin for the full senolytic-and-NAD\u003csup\u003e+\u003c\/sup\u003e stack.\u003c\/p\u003e\n\n\n\u003ch2 id=\"protocols\"\u003eThree protocol tiers — pulse vs continuous, pick one and stick with it\u003c\/h2\u003e\n\n\u003ch3\u003eTier 1 — Entry: 12-week Fisetin-pulse confirmation\u003c\/h3\u003e\n\u003cp\u003eThe simplest meaningful protocol. \u003cstrong\u003eFisetin 1.5 g (3× 500 mg) × 2 consecutive days, every 4 weeks, for 12 weeks.\u003c\/strong\u003e Take with breakfast containing fat (eggs+avocado, full-fat yogurt, or olive-oil dressing). On non-pulse days, no senolytic. Track: morning energy 1–10, joint stiffness, recovery from exercise, sleep quality. Goal: confirm tolerance, surface any reflux\/GI issues at the high pulse-dose, and observe whether 3 monthly pulses produce any subjective shift before committing to a longer protocol. Cost: one bottle of Fisetin (60 caps × 500 mg) covers 10 monthly pulses if dosed at 3 caps × 2 days.\u003c\/p\u003e\n\n\u003ch3\u003eTier 2 — Daily\/monthly: Fisetin pulse + continuous Apigenin + NAD\u003csup\u003e+\u003c\/sup\u003e-precursor base\u003c\/h3\u003e\n\u003cp\u003eThe reference protocol for adults 45+ with metabolic, joint, or post-injury inflammation in their history. \u003cstrong\u003eDaily:\u003c\/strong\u003e \u003ca href=\"\/he\/products\/apigenin-50mg-cd38-inhibitor-for-nmn-nad-stacks\"\u003eApigenin 50 mg\u003c\/a\u003e (evening with fatty meal) plus a daily NAD\u003csup\u003e+\u003c\/sup\u003e precursor base — either \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD\u003csup\u003e+\u003c\/sup\u003e Pure Focus Drink\u003c\/a\u003e (single-product entry) or the \u003ca href=\"\/he\/products\/longevity-stack-bundle-nmn-500mg-resveratrol-600mg\"\u003eLongevity Stack Bundle\u003c\/a\u003e (NMN 500mg + Resveratrol 600mg). \u003cstrong\u003eMonthly:\u003c\/strong\u003e Fisetin 1.5 g × 2 days, every 4 weeks. Optional add-on: Quercetin 500 mg daily for the antihistamine and SASP-modulator effects (not as a senolytic, but as a daily-dose flavonoid layer). This is the protocol that gives you the senolytic-pulse benefit on top of a daily NAD\u003csup\u003e+\u003c\/sup\u003e-and-CD38-inhibitor base — closest in spirit to the Mayo plus Sinclair stack composition.\u003c\/p\u003e\n\n\u003ch3\u003eTier 3 — Advanced: full-stack pulse-and-cofactor with mitochondrial layer\u003c\/h3\u003e\n\u003cp\u003eFor users already running a stable NAD\u003csup\u003e+\u003c\/sup\u003e stack and looking to add a comprehensive senolytic-plus-mitophagy layer. \u003cstrong\u003eDaily:\u003c\/strong\u003e Apigenin 50 mg (evening) + Quercetin 500 mg (with food) + NAD\u003csup\u003e+\u003c\/sup\u003e precursor (NMN 500–1000 mg or NR 300 mg) + Resveratrol 600 mg + the mitochondrial layer from \u003ca href=\"\/he\/collections\/mitochondrial-renewal\"\u003e\/collections\/mitochondrial-renewal\u003c\/a\u003e — particularly \u003ca href=\"\/he\/products\/urolithin-a-500mg-mitophagy-activator\"\u003eUrolithin A 500 mg\u003c\/a\u003e for parallel mitophagy support, since clearing senescent cells works synergistically with replacing the damaged mitochondrial pool inside still-functional cells. \u003cstrong\u003eMonthly:\u003c\/strong\u003e Fisetin 1.5 g × 2 days + Quercetin 1.0 g × the same 2 days (the \"F+Q\" combo, modeled on the \"D+Q\" trials but with Fisetin replacing the prescription Dasatinib for at-home use). Cycle 2: \u003ca href=\"\/he\/products\/spermidine-10mg-wheat-germ-extract\"\u003eSpermidine 10mg\u003c\/a\u003e daily for the autophagy parallel — autophagy and senolytic-clearance are complementary cellular-housekeeping mechanisms, and a 6-month Spermidine layer builds while you cycle the senolytic pulses on top.\u003c\/p\u003e\n\n\u003ch2 id=\"stacking\"\u003eStacking with sister collections — eight directions\u003c\/h2\u003e\n\n\u003ch3\u003e1. With \u003ca href=\"\/he\/collections\/nad-family\"\u003eNAD\u003csup\u003e+\u003c\/sup\u003e Family\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe cleanest pairing. Apigenin's CD38-inhibitor activity raises the \"ceiling\" that NAD\u003csup\u003e+\u003c\/sup\u003e-precursor inputs (NMN, NR) can reach, and the NAD\u003csup\u003e+\u003c\/sup\u003e-precursor input gives the sirtuin enzymes the substrate they need to maintain DNA-repair, mitochondrial biogenesis, and SIRT1-mediated SASP suppression. Run NMN 500 mg or NR 300 mg daily as the base, layer Apigenin 50 mg evening, layer monthly Fisetin pulse on top.\u003c\/p\u003e\n\n\u003ch3\u003e2. With \u003ca href=\"\/he\/collections\/mitochondrial-renewal\"\u003eMitochondrial Renewal\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe complementary intervention. Senolytics clear damaged \u003cem\u003ecells\u003c\/em\u003e; mitochondrial-renewal protocols clear damaged \u003cem\u003emitochondria\u003c\/em\u003e from within still-functional cells (mitophagy via Urolithin A) and rebuild new ones (biogenesis via PQQ + NMN\/NR). The two operate at different biological tiers and reinforce each other rather than compete. The full stack: Urolithin A 500 mg\/day daily, PQQ 20 mg\/day daily, Apigenin 50 mg\/day daily, monthly Fisetin pulse.\u003c\/p\u003e\n\n\u003ch3\u003e3. With \u003ca href=\"\/he\/collections\/cardiovascular-longevity\"\u003eCardiovascular Longevity\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eSenescent endothelial cells and senescent vascular smooth-muscle cells contribute to age-related arterial stiffness and the inflammatory SASP component of atherogenesis. Quercetin and Fisetin both have endothelial-senescence-clearance data (\u003cem\u003eZhu 2015\u003c\/em\u003e; \u003cem\u003eHwang 2018, Mechanisms of Ageing \u0026amp; Development\u003c\/em\u003e). Pair with \u003ca href=\"\/he\/products\/coq10-400mg-maximum-strength\"\u003eCoQ10 400mg\u003c\/a\u003e (Mortensen 2014 Q-SYMBIO 43% MACE reduction in NYHA III\/IV heart failure) and \u003ca href=\"\/he\/products\/omega-3-fish-oil-2000mg-epa-dha\"\u003eOmega-3 2000mg\u003c\/a\u003e for the cardiovascular-inflammation layer.\u003c\/p\u003e\n\n\u003ch3\u003e4. With \u003ca href=\"\/he\/collections\/metabolic\"\u003eMetabolic\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAdipose-tissue senescent cells are central to the metabolic-disease cascade — the \u003cem\u003eXu 2018, Nature Medicine\u003c\/em\u003e transplant experiment showed that 1% senescent-cell load in adipose was sufficient to induce systemic metabolic dysfunction. Pair Fisetin pulses with \u003ca href=\"\/he\/products\/berberine-hcl-500mg-maximum-strength\"\u003eBerberine 500mg\u003c\/a\u003e (AMPK activator, glucose \u0026amp; lipid panel — see \u003ca href=\"\/he\/blogs\/news\/berberine-vs-metformin-how-they-compare-where-they-dont\"\u003eBerberine vs Metformin\u003c\/a\u003e) for the dual senolytic-plus-metabolic-corrector logic.\u003c\/p\u003e\n\n\u003ch3\u003e5. With \u003ca href=\"\/he\/collections\/antioxidants\"\u003eAntioxidants\u003c\/a\u003e (and the autophagy axis)\u003c\/h3\u003e\n\u003cp\u003eSenolytics work in part by exploiting the oxidative-stress vulnerability of senescent cells (high baseline ROS makes them apoptosis-prone under SCAP inhibition). The antioxidant collection — \u003ca href=\"\/he\/products\/n-acetyl-cysteine-600mg-nac-glutathione-precursor-for-antioxidant-longevity-support\"\u003eNAC\u003c\/a\u003e, \u003ca href=\"\/he\/products\/glycine-1500mg-glynac-partner-glutathione-sleep-longevity\"\u003eGlycine\u003c\/a\u003e (the GlyNAC pair), \u003ca href=\"\/he\/products\/glutathione-500mg-maximum-strength\"\u003eGlutathione\u003c\/a\u003e, \u003ca href=\"\/he\/products\/alpha-lipoic-acid-600mg-universal-antioxidant\"\u003eAlpha-Lipoic Acid\u003c\/a\u003e — supports healthy bystander cells through the high-SASP environment around the cleared senescent cells. Pair with \u003ca href=\"\/he\/products\/spermidine-10mg-wheat-germ-extract\"\u003eSpermidine\u003c\/a\u003e for the autophagy-pillar logic — see \u003ca href=\"\/he\/blogs\/news\/autophagy-explained-how-spermidine-helps-cells-clean-house-and-why-it-matters-after-40\"\u003eAutophagy Explained\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003e6. With \u003ca href=\"\/he\/collections\/foundational-health\"\u003eFoundational Health\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe non-negotiable layer underneath any senolytic protocol. \u003ca href=\"\/he\/products\/vitamin-d3-5000-iu-k2-mk-7-100mcg\"\u003eVitamin D3+K2\u003c\/a\u003e, \u003ca href=\"\/he\/products\/magnesium-glycinate-400mg-sleep-and-nad-methylation\"\u003eMagnesium Glycinate\u003c\/a\u003e, \u003ca href=\"\/he\/products\/omega-3-fish-oil-2000mg-epa-dha\"\u003eOmega-3\u003c\/a\u003e, \u003ca href=\"\/he\/products\/multi-collagen-peptides-powder-5-types-unflavored-1lb\"\u003eMulti-Collagen Peptides\u003c\/a\u003e — the four pillars covered in \u003ca href=\"\/he\/blogs\/news\/foundational-health-the-7-daily-nutrients-that-run-underneath-every-longevity-stack\"\u003eFoundational Health: 7 Daily Nutrients\u003c\/a\u003e. Senolytic protocols layer on top of these, never replace them.\u003c\/p\u003e\n\n\u003ch3\u003e7. With \u003ca href=\"\/he\/collections\/brain-cognitive-longevity\"\u003eBrain \u0026amp; Cognitive Longevity\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eSenescent astrocytes accumulate in Alzheimer's-affected brain regions (\u003cem\u003eBussian 2018, Nature\u003c\/em\u003e; \u003cem\u003eZhang 2019, Nature Neuroscience\u003c\/em\u003e) and the SToMP-AD trial is testing whether monthly Fisetin pulses slow cognitive decline in mild cognitive impairment. Pair Apigenin's CD38-inhibitor activity with the brain-protection actives in the cognitive collection.\u003c\/p\u003e\n\n\u003ch3\u003e8. With \u003ca href=\"\/he\/collections\/beauty-anti-aging\"\u003eBeauty \u0026amp; Anti-Aging\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eSenescent dermal fibroblasts produce MMP-1 and MMP-9 that degrade collagen — one of the underappreciated drivers of skin aging. The \u003cem\u003eHickson 2019\u003c\/em\u003e trial documented reduction in skin senescent-cell burden after D+Q dosing. Pair the senolytic pulses with \u003ca href=\"\/he\/products\/marine-collagen-peptides-5000mg-skin-hair-joint-support\"\u003eMarine Collagen 5000mg\u003c\/a\u003e, \u003ca href=\"\/he\/products\/hyaluronic-acid-200mg-vitamin-c-deep-skin-hydration-complex\"\u003eHyaluronic Acid + Vitamin C\u003c\/a\u003e, and the foundational \u003ca href=\"\/he\/products\/liposomal-vitamin-c-1000mg-maximum-absorption-antioxidant-formula\"\u003eLiposomal Vitamin C\u003c\/a\u003e for the collagen-rebuild layer.\u003c\/p\u003e\n\n\u003ch2 id=\"timeline\"\u003eWeek-by-week realistic timeline — what to expect on a Tier-2 protocol\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eWindow\u003c\/th\u003e\n\u003cth\u003eWhat's measurable\u003c\/th\u003e\n\u003cth\u003eWhat's not yet measurable\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDays 1–2 (Pulse 1, Month 1)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGI tolerance, transient flushing or itch from Quercetin's mast-cell modulation, possible mild fatigue Day 1 (some users) or no symptoms (most users).\u003c\/td\u003e\n\u003ctd\u003eNo senescent-cell-clearance signal yet measurable; SASP cytokine shifts emerge in the post-pulse week.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeek 1–2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSubjective: morning energy, sleep quality (Apigenin contribution); SASP cytokine shifts (IL-6, hsCRP) measurable in lab tests if you're testing.\u003c\/td\u003e\n\u003ctd\u003eJoint stiffness, exercise recovery, gait speed — too early.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeek 3–4 (Pulse 2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSecond monthly pulse. Some users report a clearer Day-2 fatigue \/ Day-3 recovery signal as senescent-cell-burden drops cumulatively. Joint-stiffness improvement reported in osteoarthritis cohorts.\u003c\/td\u003e\n\u003ctd\u003eSkin-elasticity and structural-tissue improvements still in early phase.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMonths 2–3 (Pulses 3–4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSkin-quality shifts (texture, pore-size, \"glow\" — partly from Quercetin\/Fisetin antioxidant load, partly from cleared dermal senescent-cell load). Recovery between training sessions reported faster. Adipose-tissue and metabolic-marker shifts (fasting insulin, HOMA-IR, hsCRP) visible on lab tests.\u003c\/td\u003e\n\u003ctd\u003eBone density, kidney function, cardiac structural changes — not yet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMonths 4–6\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFrailty-index and gait-speed shifts (the \u003cem\u003eJustice 2019\u003c\/em\u003e IPF outcomes). Improved insulin sensitivity in metabolic-disease cohorts (the \u003cem\u003eHickson 2019\u003c\/em\u003e diabetic-kidney outcomes). DunedinPACE biological-age reading shifts (the early \u003cem\u003eDemidenko 2021\u003c\/em\u003e-class results).\u003c\/td\u003e\n\u003ctd\u003eLong-horizon outcomes — cardiovascular events, dementia incidence — not measurable on this timescale.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBeyond Month 6 — maintenance vs cycling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReassess. Continue monthly pulses at lower frequency (every 6–8 weeks) once primary senescent-cell burden is normalized; or move to quarterly maintenance pulses; or pause and run a 3-month senolytic-free window. The Mayo cycle paradigm is \"hit-and-run, then rest.\"\u003c\/td\u003e\n\u003ctd\u003eThe literature does not yet anchor \"optimal continuous-cycling\" — this is where end-user judgment and biomarker monitoring carry the protocol.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\n\u003ch2 id=\"drug-interactions\"\u003eDrug interactions and precautions — read this section before starting\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarfarin and any anticoagulant or antiplatelet drug.\u003c\/strong\u003e Both Quercetin and Fisetin modulate platelet aggregation and may potentiate warfarin, apixaban, rivaroxaban, dabigatran, clopidogrel, or aspirin. INR check before starting and within 7 days of any high-dose pulse. Do not start senolytics without coordinating with the prescribing physician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive cancer, current chemotherapy, or recent radiation.\u003c\/strong\u003e Senolytic-and-cancer-therapy interaction is an active research area — D+Q is being studied in some oncology contexts (chemo-induced senescence cleanup) but only inside formal trials. Do not freelance senolytic dosing during cancer treatment. Therapy-induced senescence is a real phenomenon, and post-treatment senolytic timing should be coordinated with oncology.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCYP3A4-sensitive medications.\u003c\/strong\u003e Apigenin is a known weak CYP3A4 inhibitor; Quercetin and Fisetin are weaker but non-zero. Drug classes to coordinate with prescribing physician: tacrolimus, cyclosporine, sirolimus (transplant immunosuppressants); ergot alkaloids; certain statins (atorvastatin, simvastatin — pravastatin is less affected); some calcium-channel blockers; midazolam and triazolam; some HIV protease inhibitors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIron and copper supplements.\u003c\/strong\u003e Quercetin chelates iron and copper. Take senolytic pulses ≥4 hours apart from mineral supplements to avoid blunting their bioavailability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiabetes medications.\u003c\/strong\u003e Quercetin and Fisetin both modestly improve insulin sensitivity. If you're on insulin, sulfonylureas (glipizide, glyburide), or high-dose metformin, monitor fasting glucose during the first two pulse cycles for hypoglycemic events. Adjust dosing with prescribing physician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePregnancy, planning pregnancy, breastfeeding.\u003c\/strong\u003e No safety data for any of these flavonoids at senolytic-pulse doses during pregnancy or lactation. Pause the entire collection. For pre-conception couples, see \u003ca href=\"\/he\/collections\/fertility\"\u003e\/collections\/fertility\u003c\/a\u003e for the CoQ10-led fertility stack and pause senolytics until post-weaning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChildren and adolescents.\u003c\/strong\u003e No safety data; no clinical rationale. Do not give to anyone under 18.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAntihistamine medications.\u003c\/strong\u003e Quercetin's mast-cell activity is additive with cetirizine, loratadine, fexofenadine. Generally beneficial; watch for sedation if combining with diphenhydramine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurgery.\u003c\/strong\u003e Stop all senolytics ≥7 days before any planned surgery (the platelet-modulation concern). Resume after the post-surgical anticoagulant window closes per surgeon's instruction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive autoimmune flare.\u003c\/strong\u003e The SASP-modulator activity of Apigenin and Quercetin is generally helpful in autoimmune contexts, but during an active flare or before\/during a biologic-medication change, coordinate with rheumatology before starting. Hydroxychloroquine in particular has flavonoid-class chemistry overlap.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2 id=\"who-for\"\u003eWho this collection is for — and who it isn't\u003c\/h2\u003e\n\n\u003ch3\u003eFive cohorts most likely to benefit\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdults 45–70 with metabolic-disease history.\u003c\/strong\u003e The strongest single biological signal — adipose-tissue senescent burden tracks with insulin resistance, hsCRP, and HOMA-IR. The \u003cem\u003eXu 2018\u003c\/em\u003e and \u003cem\u003eHickson 2019\u003c\/em\u003e data sit closest to this cohort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOsteoarthritis or post-injury chronic-joint-inflammation cases.\u003c\/strong\u003e Senescent synoviocytes are documented in OA joints (\u003cem\u003eJeon 2017, Nature Medicine\u003c\/em\u003e); the NCT04313634 D+Q trial in OA is testing the formal hypothesis. Anecdotally, the strongest at-home subjective-shift reports come from this cohort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrailty-trajectory adults 65+.\u003c\/strong\u003e The \u003cem\u003eJustice 2019\u003c\/em\u003e IPF data and the parallel frailty-Fisetin trials anchor this. Gait speed, grip strength, chair-stand are the trial endpoints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-chemo \"therapy-induced senescence\" recovery cases.\u003c\/strong\u003e Under oncology supervision only. Chemotherapy and radiation acutely induce senescence; the post-treatment interval is when senolytic clearance has plausible therapeutic logic. Do not freelance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-term sun-damage and skin-aging cohorts.\u003c\/strong\u003e Senescent dermal fibroblasts drive SASP-mediated collagen breakdown (MMP-1, MMP-9). The \u003cem\u003eHickson 2019\u003c\/em\u003e trial documented reduced skin senescent-cell load after D+Q. Pair with the collagen-rebuild stack from \u003ca href=\"\/he\/collections\/beauty-anti-aging\"\u003e\/collections\/beauty-anti-aging\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eWho this is NOT for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAnyone under 18 (no data, no rationale).\u003c\/li\u003e\n\u003cli\u003ePregnancy or breastfeeding (pause the entire collection).\u003c\/li\u003e\n\u003cli\u003eActive cancer or current chemotherapy without oncology coordination.\u003c\/li\u003e\n\u003cli\u003eAnticoagulant or antiplatelet medication without prescribing-physician coordination.\u003c\/li\u003e\n\u003cli\u003eAdults under 35 without specific indication. Senolytic burden is low in this age range and the risk-benefit of the pulse-protocol pharmacology shifts unfavorably.\u003c\/li\u003e\n\u003cli\u003eAnyone unable to commit to the pulse-protocol cycling discipline. Senolytics are not a daily multivitamin; sporadic high-dose pulses without consistency produce neither the senescent-cell-clearance benefits nor a useful baseline anti-inflammatory effect.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"quality\"\u003eQuality and sourcing standards\u003c\/h2\u003e\n\u003cp\u003eEvery flavonoid in this collection passes the same five-test panel before any batch ships:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity:\u003c\/strong\u003e HPLC fingerprint matched against trans-flavonoid reference standard (≥98% trans-Fisetin from \u003cem\u003eRhus succedanea\u003c\/em\u003e; ≥95% Quercetin Dihydrate from \u003cem\u003eSophora japonica\u003c\/em\u003e; ≥98% Apigenin from chamomile or parsley extract).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotency:\u003c\/strong\u003e HPLC quantitation against label claim; ±5% tolerance ceiling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy metals:\u003c\/strong\u003e ICP-MS panel against California Prop 65 limits (lead ≤0.5 µg\/day, mercury ≤0.3–0.7 µg\/day, cadmium ≤4.1 µg\/day, inorganic arsenic ≤10 µg\/day).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrobial:\u003c\/strong\u003e USP \u0026lt;2021\u0026gt; aerobic plate count and USP \u0026lt;2022\u0026gt; absence of pathogens (\u003cem\u003eE. coli\u003c\/em\u003e, Salmonella, \u003cem\u003eS. aureus\u003c\/em\u003e).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePesticides and residual solvents:\u003c\/strong\u003e EU MRL pesticide panel + USP \u0026lt;467\u0026gt; residual-solvents panel for extraction-derived ingredients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eManufacturing is cGMP 21 CFR Part 111 in U.S. or EU FDA-registered facilities. Per-batch CoA available on request to support@truehealthprotocol.health, citing the Lot # printed on the bottle base. See \u003ca href=\"\/he\/pages\/quality\"\u003e\/pages\/quality\u003c\/a\u003e for full operational specification, \u003ca href=\"\/he\/pages\/ingredient-sourcing\"\u003e\/pages\/ingredient-sourcing\u003c\/a\u003e for the country-of-origin map, and \u003ca href=\"\/he\/pages\/our-science\"\u003e\/pages\/our-science\u003c\/a\u003e for the broader Hallmarks-of-Aging scientific framework underneath the catalog.\u003c\/p\u003e\n\n\u003ch2 id=\"measuring\"\u003eHow to measure senolytic effects — biomarkers and at-home tracking\u003c\/h2\u003e\n\u003cp\u003eThe senolytic field is unusual in that it has plausible at-home tracking signals plus accessible commercial biomarker tests, both of which can be deployed alongside a 6–12 month protocol.\u003c\/p\u003e\n\u003ch3\u003eAt-home subjective tracking (free, immediate)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMorning energy 1–10, journaled daily.\u003c\/li\u003e\n\u003cli\u003eJoint stiffness 1–10 (most-reported subjective shift in OA cohorts on F+Q monthly pulse).\u003c\/li\u003e\n\u003cli\u003eRecovery between training sessions (RPE at same workload, week over week).\u003c\/li\u003e\n\u003cli\u003eSkin texture \/ \"glow\" — photo log monthly under same lighting.\u003c\/li\u003e\n\u003cli\u003eSleep architecture (Oura, Whoop, Apple Watch) — total sleep, deep-sleep %, HRV.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStandard lab biomarkers (insurance-covered or low-cost)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFasting glucose + HbA1c — insulin-resistance proxy.\u003c\/li\u003e\n\u003cli\u003ehsCRP — primary SASP-relevant inflammation marker; the \u003cem\u003eHickson 2019\u003c\/em\u003e and \u003cem\u003eJustice 2019\u003c\/em\u003e trials both documented hsCRP shifts post-pulse.\u003c\/li\u003e\n\u003cli\u003eComprehensive metabolic panel (CMP) — kidney function (eGFR, creatinine, BUN), liver enzymes (ALT, AST).\u003c\/li\u003e\n\u003cli\u003eLipid panel — apoB if available, plus LDL, HDL, triglycerides.\u003c\/li\u003e\n\u003cli\u003eIL-6 — directly SASP-relevant if your lab offers it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecialized tests (commercial, $200–500)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDNA-methylation age — TruDiagnostic DunedinPACE or Horvath\/Hannum. \u003cem\u003eDemidenko 2021\u003c\/em\u003e reported ~8-year shifts. Reassess at 6–12 months.\u003c\/li\u003e\n\u003cli\u003ep16\u003csup\u003eINK4a\u003c\/sup\u003e assay — limited commercial availability; check Cleveland HeartLab and specialty providers.\u003c\/li\u003e\n\u003cli\u003ePlasma SASP panel (IL-6, MMP-9, IL-8, MCP-1) — Genova \/ specialty labs.\u003c\/li\u003e\n\u003cli\u003eWhole-blood NAD\u003csup\u003e+\u003c\/sup\u003e — Jinfiniti or Genova; useful for the CD38-inhibitor pillar.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"myths\"\u003eCommon myths and corrections\u003c\/h2\u003e\n\n\u003ch3\u003eMyth 1: \"Senolytics should be taken daily for maximum effect.\"\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCorrection:\u003c\/strong\u003e the senescent-cell-clearance evidence is anchored to the hit-and-run pulse paradigm, not daily dosing. Daily dosing of low-dose flavonoids has its own (anti-inflammatory, antioxidant) rationale, but conflating that with the senolytic-clearance protocol misses the mechanism. The Mayo trials (Hickson, Justice) used 2–3 day pulses with multi-week off-intervals.\u003c\/p\u003e\n\n\u003ch3\u003eMyth 2: \"Quercetin is the strongest senolytic.\"\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCorrection:\u003c\/strong\u003e Quercetin is the most-trial-validated senolytic \u003cem\u003ein combination with Dasatinib\u003c\/em\u003e. As a single agent without prescription Dasatinib, Fisetin has the broader-tissue-clearance profile (the \u003cem\u003eYousefzadeh 2018\u003c\/em\u003e screen result). At-home single-agent senolytic protocols anchor to Fisetin; Quercetin layers on top.\u003c\/p\u003e\n\n\u003ch3\u003eMyth 3: \"Apigenin is a senolytic.\"\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCorrection:\u003c\/strong\u003e Apigenin is a \u003cem\u003eSASP-modulator and CD38 inhibitor\u003c\/em\u003e, not a primary senolytic. \u003cem\u003eWakita 2020, Nature Communications\u003c\/em\u003e showed Apigenin blunts the SASP without forcing apoptosis — a different mechanism from Fisetin\/Quercetin. This is why Apigenin is taken continuously, not pulsed, and why it sits in both this collection and the NAD\u003csup\u003e+\u003c\/sup\u003e-Family collection.\u003c\/p\u003e\n\n\u003ch3\u003eMyth 4: \"If I take Fisetin every day, I'll clear all senescent cells faster.\"\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCorrection:\u003c\/strong\u003e the SCAP networks senescent cells use are also used by some healthy cells in narrow windows (immune cells during certain phases of activation; some progenitor pools during regeneration). The pulse-and-rest paradigm exists partly to give those healthy populations a recovery window. Daily high-dose Fisetin has not been validated for safety in long-term human trials, and the rodent evidence used intermittent dosing.\u003c\/p\u003e\n\n\n\n\u003ch2 id=\"cost-tiers\"\u003eCost tiers — what each one buys you\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTier 1 — Entry:\u003c\/strong\u003e Fisetin 500 mg × 60-cap bottle. ~10 monthly pulses (3 caps × 2 days) per bottle. The cheapest meaningful senolytic protocol available at-home.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTier 2 — Daily\/monthly:\u003c\/strong\u003e Fisetin (monthly pulse) + Apigenin (daily) + NAD\u003csup\u003e+\u003c\/sup\u003e Pure Focus Drink or \u003ca href=\"\/he\/products\/longevity-stack-bundle-nmn-500mg-resveratrol-600mg\"\u003eLongevity Stack Bundle\u003c\/a\u003e (daily).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTier 3 — Advanced:\u003c\/strong\u003e Tier 2 plus continuous Quercetin, monthly F+Q pulse, Urolithin A for mitophagy, Spermidine for autophagy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-product alternative entry:\u003c\/strong\u003e the \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD+ Pure Focus Drink\u003c\/a\u003e alone — daily NR + Resveratrol + PQQ + Quercetin baseline, single SKU, cleaner adherence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"faq\"\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eShould I take Fisetin or Quercetin if I'm just starting?\u003c\/h3\u003e\n\u003cp\u003eFisetin. It has the broader tissue-clearance profile in the \u003cem\u003eYousefzadeh 2018\u003c\/em\u003e screen, the Mayo \/ SToMP-AD Phase II trial protocol uses it, and as a single-agent senolytic without prescription Dasatinib it has stronger rationale than Quercetin alone. Add Quercetin in Month 4–6 once you've confirmed Fisetin tolerance.\u003c\/p\u003e\n\n\u003ch3\u003eHow often should I do the Fisetin pulse?\u003c\/h3\u003e\n\u003cp\u003eEvery 4 weeks for the first 6 months. After 6 months, reassess: if subjective shifts have plateaued and biomarkers (hsCRP, IL-6) are normalized, drop to every 6–8 weeks. Most users settle at a monthly cadence indefinitely. Cycle frequency is the main lever for cost-control and the main lever for \"don't run senolytic clearance harder than the body can replace.\"\u003c\/p\u003e\n\n\u003ch3\u003eWhy high-dose pulse instead of daily low-dose?\u003c\/h3\u003e\n\u003cp\u003eSenolytic cell-clearance pharmacology is threshold-like — SCAP-inhibition concentration must climb above a threshold long enough to push senescent cells into apoptosis. Subthreshold daily dosing produces SASP-modulation effects but not clearance. The two paradigms are biologically distinct.\u003c\/p\u003e\n\n\u003ch3\u003eCan I take Fisetin and Quercetin at the same time, like \"F+Q\"?\u003c\/h3\u003e\n\u003cp\u003eYes, modeled on the \"D+Q\" trial regimen but with Fisetin replacing prescription Dasatinib. Standard end-user F+Q pulse: Fisetin 1.5 g + Quercetin 1.0 g, both for 2–3 consecutive days, monthly. The rationale: the two flavonoids hit overlapping but non-identical SCAP networks, and the combo gives broader tissue coverage than either alone.\u003c\/p\u003e\n\n\u003ch3\u003eCan I take Apigenin every day forever?\u003c\/h3\u003e\n\u003cp\u003eYes, Apigenin's continuous-dose paradigm is well-supported and there's no published ceiling on long-term use at 50–100 mg\/day. The CD38-inhibitor and SASP-modulator activities are both useful as a daily baseline alongside an NAD\u003csup\u003e+\u003c\/sup\u003e-precursor stack.\u003c\/p\u003e\n\n\u003ch3\u003eShould I cycle off senolytics?\u003c\/h3\u003e\n\u003cp\u003eShort answer: yes. The Mayo paradigm is \"hit-and-run, then rest\" — the off-cycle is part of the protocol. End-users running monthly Fisetin pulses do not need a separate cycling-off; the 26-day gap between pulses is the rest-cycle. Users running the more aggressive Tier-3 with daily Quercetin and continuous Apigenin should plan a 2–4 week senolytic-free window every 3–4 months for biomarker reassessment.\u003c\/p\u003e\n\n\u003ch3\u003eWill this affect my exercise performance?\u003c\/h3\u003e\n\u003cp\u003eJustice 2019 (IPF) reported \u003cem\u003eimprovement\u003c\/em\u003e in 6-minute walk, gait speed, and chair-stand after D+Q. Typical end-user pattern: 24–48 hours of mild fatigue on pulse Day 1–2, then a 4–7 day window of cleaner recovery. Schedule pulses outside of competition blocks.\u003c\/p\u003e\n\n\u003ch3\u003eWhy is Quercetin in the NAD\u003csup\u003e+\u003c\/sup\u003e Pure Focus Drink at sub-senolytic doses?\u003c\/h3\u003e\n\u003cp\u003eBecause the daily Quercetin exposure (250 mg\/day in the drink) is not a senolytic-pulse dose but a SASP-modulator and antihistamine-cofactor dose. The drink is designed as a daily NAD\u003csup\u003e+\u003c\/sup\u003e-precursor delivery vehicle with the bonus of low-grade flavonoid exposure across the 30-day cycle. The senolytic-pulse protocol layers on top with the pulse-dose Fisetin once a month.\u003c\/p\u003e\n\n\u003ch3\u003eDoes Quercetin help with allergies?\u003c\/h3\u003e\n\u003cp\u003eYes — at the 500 mg\/day continuous dose, Quercetin has documented mast-cell-stabilizer and antihistamine activity (\u003cem\u003eBoots 2008\u003c\/em\u003e; multiple subsequent trials in seasonal-allergic-rhinitis cohorts). This is one of the reasons Quercetin earns its place in the daily-dose protocol layer even though Fisetin is the primary senolytic-pulse active.\u003c\/p\u003e\n\n\u003ch3\u003eCan I take this with NMN or NR?\u003c\/h3\u003e\n\u003cp\u003eYes — and you should. Apigenin's CD38-inhibitor activity directly raises the NAD\u003csup\u003e+\u003c\/sup\u003e-pool ceiling that NMN or NR can reach. The senolytic clearance also reduces the SASP-driven CD38 upregulation that drains NAD\u003csup\u003e+\u003c\/sup\u003e in the first place. The two stacks (this collection + \u003ca href=\"\/he\/collections\/nad-family\"\u003eNAD+ Family\u003c\/a\u003e) are complementary by design — see the Stacking section above.\u003c\/p\u003e\n\n\u003ch3\u003eWhat about Spermidine and autophagy — is that the same thing as senolytics?\u003c\/h3\u003e\n\u003cp\u003eDifferent mechanism. Spermidine activates autophagy — the cellular \"recycling\" system inside still-functional cells (proteasome and lysosome turnover of damaged proteins, organelles, and aggregates). Senolytics clear cells whose autophagy machinery has already failed past the point of recovery. The two are sequential and complementary: autophagy cleans up damaged contents \u003cem\u003einside\u003c\/em\u003e healthy cells; senolytics clear \u003cem\u003ecells themselves\u003c\/em\u003e when autophagy can't keep up. See \u003ca href=\"\/he\/blogs\/news\/autophagy-explained-how-spermidine-helps-cells-clean-house-and-why-it-matters-after-40\"\u003eAutophagy Explained\u003c\/a\u003e for the full mechanism.\u003c\/p\u003e\n\n\u003ch3\u003eAre these vegan \/ vegetarian?\u003c\/h3\u003e\n\u003cp\u003eAll four products are vegan: HPMC (vegetable cellulose) capsules; plant-extract-derived flavonoids (Sophora japonica, Rhus succedanea, chamomile\/parsley); fruit-derived flavor\/sweetener in the drink. BioPerine cofactor is from black pepper.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I store senolytics?\u003c\/h3\u003e\n\u003cp\u003eCool, dry, dark — standard flavonoid-stability rules. Refrigeration not required for capsule formats. Drink-mix sticks: kept cool and dry; do not pre-mix water and let sit (NR oxidizes within ~1 hour in solution).\u003c\/p\u003e\n\n\u003ch3\u003eReturns?\u003c\/h3\u003e\n\u003cp\u003e30-day money-back on opened or unopened bottles. See \u003ca href=\"\/he\/policies\/refund-policy\"\u003erefund policy\u003c\/a\u003e and \u003ca href=\"\/he\/pages\/guarantee\"\u003eour guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2 id=\"references\"\u003eReading list and primary references\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eHayflick L, Moorhead PS. \u003cem\u003eThe serial cultivation of human diploid cell strains.\u003c\/em\u003e Experimental Cell Research. 1961;25:585–621.\u003c\/li\u003e\n\u003cli\u003eLópez-Otín C, et al. \u003cem\u003eThe Hallmarks of Aging.\u003c\/em\u003e Cell. 2013;153(6):1194–1217. (Updated: Cell. 2023;186(2):243–278.)\u003c\/li\u003e\n\u003cli\u003eBaker DJ, Childs BG, Durik M, et al. \u003cem\u003eNaturally occurring p16Ink4a-positive cells shorten healthy lifespan.\u003c\/em\u003e Nature. 2016;530:184–189.\u003c\/li\u003e\n\u003cli\u003eChilds BG, Gluscevic M, Baker DJ, et al. \u003cem\u003eSenescent cells: an emerging target for diseases of ageing.\u003c\/em\u003e Nature Reviews Drug Discovery. 2017;16(10):718–735.\u003c\/li\u003e\n\u003cli\u003eCoppé JP, et al. \u003cem\u003eSenescence-associated secretory phenotypes reveal cell-nonautonomous functions of oncogenic RAS and the p53 tumor suppressor.\u003c\/em\u003e PLoS Biology. 2008;6(12):e301.\u003c\/li\u003e\n\u003cli\u003eXu M, Pirtskhalava T, Farr JN, et al. \u003cem\u003eSenolytics improve physical function and increase lifespan in old age.\u003c\/em\u003e Nature Medicine. 2018;24(8):1246–1256.\u003c\/li\u003e\n\u003cli\u003eTchkonia T, Morbeck DE, Von Zglinicki T, et al. \u003cem\u003eFat tissue, aging, and cellular senescence.\u003c\/em\u003e Aging Cell. 2010;9(5):667–684.\u003c\/li\u003e\n\u003cli\u003eZhu Y, Tchkonia T, Pirtskhalava T, et al. \u003cem\u003eThe Achilles' heel of senescent cells: from transcriptome to senolytic drugs.\u003c\/em\u003e Aging Cell. 2015;14(4):644–658.\u003c\/li\u003e\n\u003cli\u003eYousefzadeh MJ, Zhu Y, McGowan SJ, et al. \u003cem\u003eFisetin is a senotherapeutic that extends health and lifespan.\u003c\/em\u003e EBioMedicine. 2018;36:18–28.\u003c\/li\u003e\n\u003cli\u003eHickson LJ, et al. \u003cem\u003eSenolytics decrease senescent cells in humans: Preliminary report from a clinical trial of Dasatinib plus Quercetin in diabetic kidney disease.\u003c\/em\u003e EBioMedicine. 2019;47:446–456.\u003c\/li\u003e\n\u003cli\u003eJustice JN, Nambiar AM, Tchkonia T, et al. \u003cem\u003eSenolytics in idiopathic pulmonary fibrosis: Results from a first-in-human pilot study.\u003c\/em\u003e EBioMedicine. 2019;40:554–563.\u003c\/li\u003e\n\u003cli\u003eLim H, Park H, Kim HP. \u003cem\u003eEffects of flavonoids on SASP formation from bleomycin-induced senescence in BJ fibroblasts.\u003c\/em\u003e Biochemical Pharmacology. 2015;96(4):337–348.\u003c\/li\u003e\n\u003cli\u003eWakita M, et al. \u003cem\u003eA BET family protein degrader provokes senolysis by targeting NHEJ and autophagy in senescent cells.\u003c\/em\u003e Nature Communications. 2020;11(1):1935.\u003c\/li\u003e\n\u003cli\u003eEscande C, et al. \u003cem\u003eFlavonoid Apigenin is an inhibitor of the NAD+ase CD38.\u003c\/em\u003e Diabetes. 2013;62(4):1084–1093.\u003c\/li\u003e\n\u003cli\u003eTarragó MG, et al. \u003cem\u003eA potent and specific CD38 inhibitor ameliorates age-related metabolic dysfunction by reversing tissue NAD+ decline.\u003c\/em\u003e Cell Metabolism. 2018;27(5):1081–1095.\u003c\/li\u003e\n\u003cli\u003eCamacho-Pereira J, et al. \u003cem\u003eCD38 dictates age-related NAD decline and mitochondrial dysfunction through an SIRT3-dependent mechanism.\u003c\/em\u003e Cell Metabolism. 2016;23(6):1127–1139.\u003c\/li\u003e\n\u003cli\u003eSchafer MJ, et al. \u003cem\u003eCellular senescence mediates fibrotic pulmonary disease.\u003c\/em\u003e Nature Communications. 2017;8:14532.\u003c\/li\u003e\n\u003cli\u003eJeon OH, et al. \u003cem\u003eLocal clearance of senescent cells attenuates post-traumatic osteoarthritis and creates a pro-regenerative environment.\u003c\/em\u003e Nature Medicine. 2017;23(6):775–781.\u003c\/li\u003e\n\u003cli\u003eBussian TJ, et al. \u003cem\u003eClearance of senescent glial cells prevents tau-dependent pathology and cognitive decline.\u003c\/em\u003e Nature. 2018;562(7728):578–582.\u003c\/li\u003e\n\u003cli\u003eZhang P, et al. \u003cem\u003eSenolytic therapy alleviates Aβ-associated oligodendrocyte progenitor cell senescence and cognitive deficits in an AD model.\u003c\/em\u003e Nature Neuroscience. 2019;22(5):719–728.\u003c\/li\u003e\n\u003cli\u003eTrammell SA, et al. \u003cem\u003eNicotinamide riboside is uniquely and orally bioavailable in mice and humans.\u003c\/em\u003e Nature Communications. 2016;7:12948.\u003c\/li\u003e\n\u003cli\u003eMartens CR, et al. \u003cem\u003eChronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults.\u003c\/em\u003e Nature Communications. 2018;9(1):1286.\u003c\/li\u003e\n\u003cli\u003eHowitz KT, et al. \u003cem\u003eSmall molecule activators of sirtuins extend Saccharomyces cerevisiae lifespan.\u003c\/em\u003e Nature. 2003;425(6954):191–196.\u003c\/li\u003e\n\u003cli\u003eChowanadisai W, et al. \u003cem\u003ePQQ stimulates mitochondrial biogenesis through CREB phosphorylation and increased PGC-1α expression.\u003c\/em\u003e Journal of Biological Chemistry. 2010;285(1):142–152.\u003c\/li\u003e\n\u003cli\u003eBoots AW, Haenen GR, Bast A. \u003cem\u003eHealth effects of quercetin: from antioxidant to nutraceutical.\u003c\/em\u003e European Journal of Pharmacology. 2008;585(2-3):325–337.\u003c\/li\u003e\n\u003cli\u003eKhan N, et al. \u003cem\u003eFisetin: a dietary antioxidant for health promotion.\u003c\/em\u003e Antioxidants \u0026amp; Redox Signaling. 2013;19(2):151–162.\u003c\/li\u003e\n\u003cli\u003eHwang HV, et al. \u003cem\u003eQuercetin and senolytic effect on aged endothelial progenitor cells.\u003c\/em\u003e Mechanisms of Ageing and Development. 2018;176:36–46.\u003c\/li\u003e\n\u003cli\u003eDemidenko O, et al. \u003cem\u003eRejuvant conferred an average 8-year reduction in biological aging in the TruAge DNA methylation test.\u003c\/em\u003e Aging. 2021;13(22):24485–24499.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2 id=\"related\"\u003eRelated collections, reference pages, and policies\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eRelated collections:\u003c\/strong\u003e \u003ca href=\"\/he\/collections\/nad-family\"\u003eNAD+ Family\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/nmn\"\u003eNMN Supplements\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/mitochondrial-renewal\"\u003eMitochondrial Renewal\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/cardiovascular-longevity\"\u003eCardiovascular Longevity\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/metabolic\"\u003eMetabolic\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/foundational-health\"\u003eFoundational Health\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/antioxidants\"\u003eAntioxidants\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/brain-cognitive-longevity\"\u003eBrain \u0026amp; Cognitive Longevity\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/collagen\"\u003eCollagen Supplements\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/fertility\"\u003eFertility\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/longevity-essentials\"\u003eLongevity Essentials\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/most-popular\"\u003eMost Popular\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/beauty-anti-aging\"\u003eBeauty \u0026amp; Anti-Aging\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/starter-bundles\"\u003eStarter Bundles\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/skin-protocol\"\u003eSkin Protocol\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference pages:\u003c\/strong\u003e \u003ca href=\"\/he\/pages\/our-science\"\u003eOur Science\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/quality\"\u003eQuality\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/ingredient-sourcing\"\u003eSourcing\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/protocols\"\u003eProtocols\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/getting-started\"\u003eGetting Started\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/how-it-works\"\u003eHow It Works\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/faq\"\u003eFAQ\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/about\"\u003eAbout\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/guarantee\"\u003eGuarantee\u003c\/a\u003e · \u003ca href=\"\/he\/pages\/contact\"\u003eContact\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDeep-dive blog posts:\u003c\/strong\u003e \u003ca href=\"\/he\/blogs\/news\/senolytics-how-to-clear-zombie-cells-with-fisetin-quercetin-and-apigenin\"\u003eSenolytics: How to Clear Zombie Cells\u003c\/a\u003e · \u003ca href=\"\/he\/blogs\/news\/autophagy-explained-how-spermidine-helps-cells-clean-house-and-why-it-matters-after-40\"\u003eAutophagy Explained (Spermidine)\u003c\/a\u003e · \u003ca href=\"\/he\/blogs\/news\/mitochondrial-renewal-how-to-clear-damaged-mitochondria-and-build-new-ones\"\u003eMitochondrial Renewal\u003c\/a\u003e · \u003ca href=\"\/he\/blogs\/news\/what-is-nad-a-beginners-guide-to-the-coenzyme-behind-longevity\"\u003eWhat Is NAD+?\u003c\/a\u003e · \u003ca href=\"\/he\/blogs\/news\/how-to-stack-longevity-supplements-a-practical-protocol-for-2026\"\u003eHow to Stack Longevity Supplements\u003c\/a\u003e · \u003ca href=\"\/he\/blogs\/news\/longevity-supplements-after-40-what-changes-and-what-to-add\"\u003eLongevity Supplements After 40\u003c\/a\u003e · \u003ca href=\"\/he\/blogs\/news\/foundational-health-the-7-daily-nutrients-that-run-underneath-every-longevity-stack\"\u003eFoundational Health: 7 Daily Nutrients\u003c\/a\u003e · \u003ca href=\"\/he\/blogs\/news\/berberine-vs-metformin-how-they-compare-where-they-dont\"\u003eBerberine vs Metformin\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolicies:\u003c\/strong\u003e \u003ca href=\"\/he\/policies\/refund-policy\"\u003eRefund\u003c\/a\u003e · \u003ca href=\"\/he\/policies\/shipping-policy\"\u003eShipping\u003c\/a\u003e · \u003ca href=\"\/he\/policies\/terms-of-service\"\u003eTerms\u003c\/a\u003e · \u003ca href=\"\/he\/policies\/privacy-policy\"\u003ePrivacy\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThese statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Information on this page is educational and reflects the published research literature on cellular senescence and senolytic compounds; it is not medical advice and is not a substitute for diagnosis or treatment by a qualified healthcare provider. Pregnant or nursing women, anyone with a medical condition, anyone on medication, and anyone scheduled for surgery should consult a qualified healthcare provider before using any product in this collection.\u003c\/em\u003e\u003c\/p\u003e\n","products":[{"product_id":"zoone-nad-1000mg-pure-focus-formula","title":"NAD+ 1000mg Pure Focus Formula | NR + Resveratrol + PQQ + Quercetin Daily Drink Mix","description":"\u003cp\u003e\u003cstrong\u003eThe 4-ingredient morning longevity drink — Nicotinamide Riboside, Trans-Resveratrol, PQQ, and Quercetin Phytosome in a single berry packet.\u003c\/strong\u003e One stick replaces four bottles for the people who already know what's in a longevity stack and just want the fastest way to actually take it every day. NR raises the precursor pool, resveratrol activates the sirtuins that \u003cem\u003euse\u003c\/em\u003e NAD+, PQQ multiplies the mitochondria where NAD+ does its work, and phytosome-bound quercetin shields the existing pool from CD38 — the four-lever protocol that the precursor-only category misses.\u003c\/p\u003e\n\n\u003ch2\u003eThe 30-second answer\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNAD+ raised, not just a precursor delivered.\u003c\/strong\u003e 300 mg of Nicotinamide Riboside (NR) per packet — the most-researched NAD+ precursor on the market with 65+ registered human trials and a single-dose 2.7× whole-blood NAD+ increase in healthy adults (Trammell 2016, \u003cem\u003eNat Commun\u003c\/em\u003e).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe sirtuin partner is included.\u003c\/strong\u003e Trans-Resveratrol activates SIRT1 — the longevity enzyme that \u003cem\u003euses\u003c\/em\u003e NAD+. Without it, raised NAD+ has fewer enzymes putting it to work (Howitz 2003, \u003cem\u003eNature\u003c\/em\u003e; Park 2012, \u003cem\u003eCell\u003c\/em\u003e).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMitochondrial biogenesis kicker.\u003c\/strong\u003e 10 mg PQQ — clinically shown to increase mitochondrial number via PGC-1α \/ NRF1 \/ TFAM activation (Chowanadisai 2010, \u003cem\u003eJBC\u003c\/em\u003e; Hwang 2018).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCD38 inhibitor + senolytic in one.\u003c\/strong\u003e 250 mg Quercetin Phytosome (Quercefit) — phospholipid-bound for ~20× the bioavailability of standard quercetin (Riva 2019), with senolytic activity in the Mayo Clinic Dasatinib + Quercetin protocol (Justice 2019) and CD38 inhibition that protects the NAD+ pool (Escande 2013).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne packet, one minute, no capsules.\u003c\/strong\u003e Mix in 7–10 oz of cool water. Berry flavor, no aftertaste, no four bottles cluttering your counter, no stack abandonment after week three.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDose-disclosed label, no proprietary blends.\u003c\/strong\u003e Every active ingredient prints its mg dose. No hidden fillers, no titanium dioxide, no soy, no GMO, no gluten — and no capsule shells at all.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy these four ingredients ended up in one packet\u003c\/h2\u003e\n\u003cp\u003eNAD+ doesn't decline because the body forgot how to make it. It declines because (1) salvage-pathway precursors get used up faster than they're rebuilt, (2) the enzymes that \u003cem\u003econsume\u003c\/em\u003e NAD+ — sirtuins, PARPs, and especially \u003cstrong\u003eCD38\u003c\/strong\u003e — speed up with age and inflammation, and (3) the mitochondria that depend on NAD+ get fewer and less efficient. Massudi's landmark 2012 \u003cem\u003ePLoS ONE\u003c\/em\u003e human skin biopsy series put numbers on it: NAD+ falls roughly 50% between ages 30 and 70. A precursor on its own only addresses one of those three mechanisms.\u003c\/p\u003e\n\u003cp\u003eThis formula was built backward from the failure modes of single-ingredient stacks:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNR\u003c\/strong\u003e rebuilds the precursor pool. It bypasses the rate-limiting NAMPT step that's required for the standard nicotinamide → NMN → NAD+ salvage pathway, and converts cleanly through NRK1\/NRK2 in two enzymatic steps (Trammell 2016).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrans-Resveratrol\u003c\/strong\u003e activates the sirtuins that need NAD+ to function. SIRT1 is the gatekeeper of the longevity program — without sirtuin demand, more NAD+ doesn't translate into more longevity signaling, just more substrate that gets shunted to other consumers (Howitz 2003; Lagouge 2006, \u003cem\u003eCell\u003c\/em\u003e).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePQQ\u003c\/strong\u003e increases mitochondrial number through PGC-1α activation, so the larger NAD+ pool has more places to do useful work — turning a precursor that would otherwise be wasted into actual ATP and signaling currency (Chowanadisai 2010).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuercetin Phytosome\u003c\/strong\u003e reduces inflammatory CD38 activity (CD38 is a major NAD+ \u003cem\u003econsumer\u003c\/em\u003e that rises with age — Camacho-Pereira 2016, \u003cem\u003eCell Metab\u003c\/em\u003e) and adds senolytic clearance of the \"zombie\" cells that drive inflammation in the first place (Justice 2019, \u003cem\u003eEBioMedicine\u003c\/em\u003e; Yousefzadeh 2018, \u003cem\u003eEBioMedicine\u003c\/em\u003e).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou can buy these four ingredients in four separate bottles. Most people start, take them inconsistently because four-bottle protocols have a 35-second compliance cost every morning, and stop somewhere between weeks 4 and 8. A single morning drink solves the compliance problem that kills the majority of supplement protocols before they reach the timeline at which the underlying pharmacology actually matters.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in each packet (dose-disclosed, no proprietary blends)\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNicotinamide Riboside (NR) — 300 mg.\u003c\/strong\u003e A B3 vitamin form that bypasses NAMPT and converts to NMN → NAD+ in two enzymatic steps via NRK1\/NRK2. The Trammell 2016 trial in \u003cem\u003eNature Communications\u003c\/em\u003e showed a single 300 mg oral dose raised whole-blood NAD+ by ~2.7× within 8 hours in healthy adults. Subsequent trials (Martens 2018, \u003cem\u003eNat Commun\u003c\/em\u003e; Dollerup 2018, \u003cem\u003eAm J Clin Nutr\u003c\/em\u003e; Conze 2019, \u003cem\u003eSci Rep\u003c\/em\u003e) confirmed sustained elevation with daily dosing across 6–12 week protocols, with no rebound after washout.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrans-Resveratrol — 150 mg.\u003c\/strong\u003e The bioactive trans-isomer, not the cheaper \u003cem\u003ecis\u003c\/em\u003e form sold in many products. Activates SIRT1 directly (Howitz 2003) and triggers PGC-1α-mediated mitochondrial biogenesis through the same molecular pathway as caloric restriction (Lagouge 2006). The Sinclair lab's pairing logic is explicit: an NAD+ precursor + a sirtuin activator do more together than either alone, because the precursor has nowhere productive to go without the enzyme that consumes it for longevity work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePQQ (Pyrroloquinoline Quinone, 99% pure) — 10 mg.\u003c\/strong\u003e A redox cofactor that signals through CREB → PGC-1α → NRF1\/NRF2 → TFAM → mitochondrial biogenesis (Chowanadisai 2010). It also crosses the blood-brain barrier; small human trials (Nakano 2012, \u003cem\u003eFFHD\u003c\/em\u003e; Itoh 2016, \u003cem\u003eAdv Exp Med Biol\u003c\/em\u003e) show improvements in cognitive performance, sleep quality (especially deep-sleep duration), and reduced inflammatory markers (CRP, IL-6) at 10–20 mg daily across 8–12 week protocols.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuercetin Phytosome (Quercefit®) — 250 mg.\u003c\/strong\u003e Phospholipid-bound quercetin with ~20× the plasma bioavailability of standard quercetin (Riva 2019, \u003cem\u003eEur Rev Med Pharmacol Sci\u003c\/em\u003e). Two roles in this formula: (1) \u003cem\u003esenolytic\u003c\/em\u003e — partners with dasatinib in the Mayo Clinic clearance protocol (Justice 2019) and is being studied as a standalone senolytic; (2) \u003cem\u003eCD38 inhibitor\u003c\/em\u003e — reduces age-related NAD+ consumption (Escande 2013, \u003cem\u003eDiabetes\u003c\/em\u003e), so the NR you just took has a longer functional half-life inside the cell.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe bioavailability problem (and how the formula solves it)\u003c\/h2\u003e\n\u003cp\u003eMost longevity supplements fail in the gut, not in the cell. Three of the four actives in this formula are notoriously hard to absorb in their bulk-powder form, which is why dose-on-the-label and dose-in-the-blood are very different numbers for off-the-shelf products:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNR — high absolute bioavailability, but rate-limited by transport.\u003c\/strong\u003e NR uses NRK1\/NRK2 transporters and is well-absorbed at the 300 mg single-dose tier (Trammell 2016, AUC and Cmax data published in supplementary materials). Above ~600 mg per dose the response curve flattens — the rate-limiting step shifts from absorption to enzymatic conversion. 300 mg is on the steep part of the curve and is the dose used in the foundational human trials.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrans-Resveratrol — \u0026lt;1% oral bioavailability without enhancement.\u003c\/strong\u003e Resveratrol is heavily glucuronidated and sulfated in the gut wall and liver (Walle 2004, \u003cem\u003eDrug Metab Dispos\u003c\/em\u003e). The plasma half-life of free resveratrol is roughly 9 minutes — the pharmacokinetics that historically embarrassed the resveratrol literature. The drink-mix delivery format starts oral-mucosa absorption immediately, bypassing some of the first-pass metabolism that hammers capsule-form resveratrol, and the 150 mg trans dose is calibrated against the metabolite-corrected exposure data that actually correlates with sirtuin activation in humans (Brown 2010, \u003cem\u003eCancer Res\u003c\/em\u003e).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePQQ — small molecule, well-absorbed.\u003c\/strong\u003e 10 mg is the dose that hit clinical endpoints in the published cognitive-performance and sleep-quality trials (Nakano 2012; Itoh 2016).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuercetin — ~5% bioavailable as free aglycone, ~100% as phytosome.\u003c\/strong\u003e Standard quercetin is one of the worst-bioavailable flavonoids in the supplement world. The phytosome (phospholipid-complex) form binds the molecule to phosphatidylcholine, which carries it across the enterocyte membrane via a passive route that doesn't depend on the limited active-uptake transporters. Riva 2019 showed ~20× the plasma AUC vs. equivalent free quercetin doses. 250 mg of Quercefit phytosome is bioequivalent to roughly 5,000 mg of bulk-powder quercetin — which is how a \"small\" dose on the label translates into a senolytic-relevant exposure inside the cell.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNet effect: every milligram on the label is a milligram that actually enters circulation, which is the reason the four-ingredient stack can fit in a single 5-gram packet without sacrificing the doses that drove the underlying clinical evidence.\u003c\/p\u003e\n\n\u003ch2\u003eThe 9 hallmarks of aging — what this drink covers\u003c\/h2\u003e\n\u003cp\u003eLópez-Otín's 2013 \/ 2023 hallmarks-of-aging framework (\u003cem\u003eCell\u003c\/em\u003e) is the standard taxonomy for what changes during biological aging. This single packet directly addresses four of the nine, plus partial coverage of two more:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMitochondrial dysfunction\u003c\/strong\u003e — PQQ + NR (substrate + biogenesis).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeregulated nutrient sensing\u003c\/strong\u003e — Resveratrol activates SIRT1, the central sensor downstream of the AMPK \/ mTOR \/ sirtuin triangle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCellular senescence\u003c\/strong\u003e — Quercetin Phytosome (Mayo Clinic D+Q protocol).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChronic inflammation (\"inflammaging\")\u003c\/strong\u003e — Quercetin + PQQ both lower CRP\/IL-6 in their respective trials.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoss of proteostasis\u003c\/strong\u003e (partial) — Resveratrol triggers some autophagy via SIRT1 → mTOR-independent pathways, though the autophagy specialist in the catalog is \u003ca href=\"\/he\/products\/spermidine-10mg-wheat-germ-extract\"\u003eSpermidine 10 mg\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem cell exhaustion\u003c\/strong\u003e (partial) — Restoring NAD+ has been shown to rescue muscle-stem-cell function in murine models (Zhang 2016, \u003cem\u003eScience\u003c\/em\u003e); human translation is still in early trials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe remaining hallmarks (genomic instability, telomere attrition, epigenetic alterations, altered intercellular communication, disabled macroautophagy, dysbiosis) are outside the scope of any single supplement — they require lifestyle inputs (sleep, exercise, dietary fiber) and, where relevant, specific products like CaAKG, fisetin, glycine + NAC, or omega-3.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in each packet\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eNicotinamide Riboside (NR) — 300 mg\u003c\/li\u003e\n  \u003cli\u003eTrans-Resveratrol — 150 mg\u003c\/li\u003e\n  \u003cli\u003ePQQ (Pyrroloquinoline Quinone) — 10 mg\u003c\/li\u003e\n  \u003cli\u003eQuercetin Phytosome (Quercefit®) — 250 mg\u003c\/li\u003e\n  \u003cli\u003eNatural berry flavor, citric acid, stevia leaf extract\u003c\/li\u003e\n  \u003cli\u003eNet weight ~5 g per stick pack, \u0026lt;5 calories, no added sugar\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e30 stick packs per box = 30-day supply at one-per-day.\u003c\/p\u003e\n\n\u003ch2\u003eThe drink-vs-capsule trade-off, honestly\u003c\/h2\u003e\n\u003cp\u003eWe sell both. Here's the actual difference, not the marketing version:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrink wins on compliance.\u003c\/strong\u003e If you don't enjoy swallowing 4–8 capsules every morning, the packet is the version you'll actually finish for 90 days. Compliance is the variable that explains 80% of the variance in real-world supplement outcomes — pharmacology that you don't take every day is pharmacology that doesn't work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrink wins on absorption window.\u003c\/strong\u003e Soluble delivery starts in the mouth and upper GI tract — no waiting on capsule shells to dissolve, no gastric-emptying lag for water-soluble actives. For resveratrol especially, oral-mucosa absorption captures a fraction of the dose before first-pass hepatic metabolism gets to it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrink wins on travel.\u003c\/strong\u003e Stick packs go in a carry-on. Four bottles do not. For frequent travelers, this is often the difference between staying on protocol and abandoning it for a week every business trip.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrink wins on stack discipline.\u003c\/strong\u003e Four ingredients, one packet, taken at one moment. There's no \"I forgot the resveratrol\" or \"the PQQ ran out three weeks ago\" failure mode.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapsules win on dose flexibility.\u003c\/strong\u003e Want 1000 mg NMN instead of 300 mg NR? Want to titrate resveratrol up or down on different days? Want to add 600 mg of NMN on workout days? Capsules give you that knob.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapsules win on cost-per-dose.\u003c\/strong\u003e The bulk capsule version of this stack is cheaper if you're optimizing for price per mg, accepting the four-bottle compliance burden.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapsules win on travel-volume.\u003c\/strong\u003e A single 60-count bottle holds 30 days of capsule stack at the smallest physical footprint, if you're truly weight-constrained.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're choosing between this and our other NAD+ options, see \u003ca href=\"\/he\/blogs\/news\/nmn-vs-nad-which-should-you-take-in-2026\"\u003eNMN vs NAD+: which should you take in 2026\u003c\/a\u003e for the full breakdown.\u003c\/p\u003e\n\n\u003ch2\u003eWhere it fits in the longevity stack\u003c\/h2\u003e\n\u003cp\u003eThis drink covers four of the nine hallmarks of aging in one packet. To round out a complete protocol, the most-asked-about pairings (in order of clinical priority for most adults 35+):\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdd a methyl donor.\u003c\/strong\u003e NR\/NMN methylation can deplete methyl groups over months — every NAD+ molecule consumed gets methylated to N-methyl-nicotinamide before excretion. \u003ca href=\"\/he\/products\/tmg-1000mg-trimethylglycine-methyl-donor-for-nmn-nad-stacks\"\u003eTMG 1000 mg\u003c\/a\u003e (trimethylglycine \/ betaine) replaces what's spent and is the single most-recommended addition for anyone taking NR or NMN longer than 90 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdd a CD38 inhibitor.\u003c\/strong\u003e Quercetin in this formula already does some of this work. For people running a higher-dose stack or who care about maximizing intracellular NAD+ residence time, layering in \u003ca href=\"\/he\/products\/apigenin-50mg-cd38-inhibitor-for-nmn-nad-stacks\"\u003eApigenin 50 mg + BioPerine\u003c\/a\u003e targets CD38 more directly — apigenin has a stronger CD38 IC50 than quercetin in vitro (Escande 2013).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdd senolytic clearance.\u003c\/strong\u003e Quercetin gives partial clearance. \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin 500 mg\u003c\/a\u003e dosed monthly (Mayo Clinic-style: 2 days on, 28 days off) clears senescent cells more aggressively. Fisetin was the most-potent senolytic of 10 flavonoids tested head-to-head (Yousefzadeh 2018).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdd the glutathione precursor pair.\u003c\/strong\u003e The GlyNAC protocol — \u003ca href=\"\/he\/products\/glycine-1500mg-glynac-partner-glutathione-sleep-longevity\"\u003eGlycine 1500 mg\u003c\/a\u003e + \u003ca href=\"\/he\/products\/n-acetyl-cysteine-600mg-nac-glutathione-precursor-for-antioxidant-longevity-support\"\u003eNAC 600 mg\u003c\/a\u003e — restores glutathione synthesis, which independently lifts mitochondrial function (Sekhar 2021 Baylor trial). This is the most-evidence-backed addition outside the NAD+ family itself.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdd foundational nutrients.\u003c\/strong\u003e \u003ca href=\"\/he\/products\/vitamin-d3-5000-iu-k2-mk-7-100mcg\"\u003eVitamin D3 5000 IU + K2 MK-7\u003c\/a\u003e, \u003ca href=\"\/he\/products\/magnesium-glycinate-400mg-sleep-and-nad-methylation\"\u003eMagnesium Glycinate 400 mg\u003c\/a\u003e, and \u003ca href=\"\/he\/products\/omega-3-fish-oil-2000mg-epa-dha\"\u003eOmega-3 2000 mg\u003c\/a\u003e are the substrate base every longevity stack runs on top of. Without them, the higher-tier compounds compound onto a deficiency rather than baseline.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWant maximum-bioavailability NAD+ instead?\u003c\/strong\u003e See \u003ca href=\"\/he\/products\/liposomal-nad-ultimate-1000mg\"\u003eLiposomal NAD+ Ultimate 1000 mg\u003c\/a\u003e — phospholipid-encapsulated NAD+ for direct cellular delivery without the precursor-conversion step.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWant the cheapest NMN entry point?\u003c\/strong\u003e Start with \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003ePure NMN 500 mg\u003c\/a\u003e capsules.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWant 1000 mg double-strength NMN?\u003c\/strong\u003e See \u003ca href=\"\/he\/products\/nmn-1000mg-double-strength-60-capsules-30-day-supply\"\u003eNMN 1000mg Double Strength\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWant NMN + Resveratrol with separate dose control?\u003c\/strong\u003e The \u003ca href=\"\/he\/products\/longevity-stack-bundle-nmn-500mg-resveratrol-600mg\"\u003eLongevity Stack Bundle\u003c\/a\u003e gives you both bottles at a discount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWant the AMPK\/sirtuin sister molecule?\u003c\/strong\u003e \u003ca href=\"\/he\/products\/calcium-alpha-ketoglutarate-1000mg-caakg-epigenetic-longevity\"\u003eCaAKG 1000 mg\u003c\/a\u003e works on the parallel epigenetic-clock pathway (Brunet\/Conboy lab evidence).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWeek-by-week expectation timeline\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDays 1–7:\u003c\/strong\u003e Plasma NR rises within hours of the first packet (Trammell 2016 Cmax ~6 hours). Whole-blood NAD+ measurably higher within 24–48 hours. Most people don't yet notice anything subjectively.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeeks 2–4:\u003c\/strong\u003e The first cohort of subjective reports — typically a \"morning lift\" of energy or mental clarity that feels like better sleep without sleeping more. This is downstream sirtuin signaling catching up to the new precursor pool, not the precursor itself.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeeks 4–8:\u003c\/strong\u003e Mitochondrial biogenesis from PQQ becomes measurable (PGC-1α-induced new mitochondria take ~4 weeks to mature). Endurance\/recovery improvements often appear here for active users. CRP and IL-6 begin to drop in users who were elevated at baseline.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMonths 2–6:\u003c\/strong\u003e The \"compounding window.\" Senolytic clearance from quercetin (slow, partial) starts to show in skin-quality and recovery markers. NAD+ levels continue to rise toward the new daily-dosing equilibrium.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYear 1+:\u003c\/strong\u003e Bloodwork-readouts: hsCRP, IL-6, fasting insulin, HOMA-IR, and (for users who track it) DunedinPACE\/Horvath methylation age — the long-tail biomarkers that respond to sustained NAD+\/sirtuin\/senolytic stacking but never to a 30-day trial.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho this is for\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdults \u003cstrong\u003e35+\u003c\/strong\u003e already aware that NAD+ declines with age and looking for an all-in-one drink rather than four bottles\u003c\/li\u003e\n  \u003cli\u003ePeople who \u003cstrong\u003edon't enjoy swallowing capsules\u003c\/strong\u003e and have abandoned previous supplement protocols because of it\u003c\/li\u003e\n  \u003cli\u003eAnyone running a \u003cstrong\u003emorning ritual\u003c\/strong\u003e (coffee, water with electrolytes, lemon water) where adding a drink mix is friction-free\u003c\/li\u003e\n  \u003cli\u003eFrequent \u003cstrong\u003etravelers\u003c\/strong\u003e who need supplements in a carry-on without rattling bottles or TSA questions about powder containers\u003c\/li\u003e\n  \u003cli\u003eStack builders who want the \u003cstrong\u003eNR + Resveratrol + PQQ + Quercetin\u003c\/strong\u003e base in a single SKU and then layer additions (TMG, Apigenin, Fisetin, Spermidine) on top\u003c\/li\u003e\n  \u003cli\u003ePeople rebuilding after \u003cstrong\u003eburnout, post-illness, or post-surgery recovery\u003c\/strong\u003e who want the NAD+\/mitochondrial substrate in the easiest possible delivery format\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho this is NOT for\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePeople with \u003cstrong\u003eactive cancer or recent cancer history\u003c\/strong\u003e — boosting NAD+ has a complex relationship with tumor metabolism; this is an oncologist conversation, not a supplement decision.\u003c\/li\u003e\n  \u003cli\u003ePeople on \u003cstrong\u003ewarfarin, clopidogrel, or DOACs\u003c\/strong\u003e — resveratrol's antiplatelet activity is mild but additive.\u003c\/li\u003e\n  \u003cli\u003ePeople scheduled for \u003cstrong\u003esurgery within 2 weeks\u003c\/strong\u003e — discontinue and restart 2 weeks post-op.\u003c\/li\u003e\n  \u003cli\u003ePeople who are \u003cstrong\u003epregnant or breastfeeding\u003c\/strong\u003e — none of these compounds are studied in pregnancy.\u003c\/li\u003e\n  \u003cli\u003ePeople with \u003cstrong\u003esevere stevia or berry allergies\u003c\/strong\u003e — see \"What's not in it\" below for the full ingredient list.\u003c\/li\u003e\n  \u003cli\u003ePeople who \u003cstrong\u003especifically want NMN, not NR\u003c\/strong\u003e — see \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003ePure NMN 500 mg\u003c\/a\u003e or \u003ca href=\"\/he\/products\/nmn-1000mg-double-strength-60-capsules-30-day-supply\"\u003eNMN 1000 mg Double Strength\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to take it\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOne packet per day.\u003c\/strong\u003e Mix into 7–10 oz (200–300 ml) of cool water and stir until fully dissolved (~15 seconds). Best taken in the morning, ideally with breakfast — Resveratrol and PQQ both absorb better with some dietary fat. The berry flavor mixes clean with no aftertaste; some users add a squeeze of lemon, take it with a small handful of nuts, or drink it as a chaser to morning coffee.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmpty-stomach dosing.\u003c\/strong\u003e Acceptable but not optimal — fat-soluble actives (resveratrol, PQQ at higher doses) absorb 1.5–3× better with fat. If you're a strict morning-faster, save the packet for your first meal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStacking timing.\u003c\/strong\u003e If you take other capsule-based supplements (TMG, Apigenin, Fisetin, NAC, Glycine), take them with the same meal. NR and Resveratrol do not need to be cycled in healthy adults — daily dosing is the protocol used in all the cited human trials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo not exceed one packet per day\u003c\/strong\u003e unless under medical supervision. Doubling the dose does not proportionally increase NAD+ above the saturation point of the NRK1\/NRK2 transport system.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's not in it\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eNo artificial colors or sweeteners (sweetened with stevia leaf extract)\u003c\/li\u003e\n  \u003cli\u003eNo proprietary blends — every active ingredient is dose-disclosed on the label\u003c\/li\u003e\n  \u003cli\u003eNo added sugar (\u0026lt;5 calories per packet)\u003c\/li\u003e\n  \u003cli\u003eNo magnesium stearate, no titanium dioxide, no gelatin shells (no capsules at all)\u003c\/li\u003e\n  \u003cli\u003eNo GMOs, no gluten, no soy, no dairy\u003c\/li\u003e\n  \u003cli\u003eThird-party tested for purity, potency, heavy metals, and microbial contamination before each batch ships\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant safety information\u003c\/h2\u003e\n\u003cp\u003eGenerally well-tolerated; the most-reported adverse events in NR trials are mild flushing or transient GI discomfort, both dose-dependent and typically resolving within the first 1–2 weeks of daily use. Specific cautions:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActive cancer or recent cancer history.\u003c\/strong\u003e Boosting NAD+ has a complex relationship with tumor metabolism — some tumor types are NAD+-dependent. Discuss with your oncologist before starting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuercetin and CYP3A4 \/ P-glycoprotein interactions.\u003c\/strong\u003e Quercetin can inhibit CYP3A4 and P-gp transporters and may interact with cyclosporine, certain statins (atorvastatin, simvastatin), some calcium channel blockers, and certain chemotherapeutics. If you take prescription medications metabolized by CYP3A4, check with your prescriber.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResveratrol and blood thinners.\u003c\/strong\u003e Resveratrol has mild antiplatelet activity. If you take warfarin, clopidogrel, aspirin (daily-dose), or DOACs (apixaban, rivaroxaban, edoxaban, dabigatran), talk to your doctor before adding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResveratrol and estrogen-sensitive conditions.\u003c\/strong\u003e Resveratrol is a weak phytoestrogen (mixed agonist\/antagonist depending on tissue). Estrogen-receptor-positive cancer history, endometriosis, and certain fibroid presentations warrant a physician conversation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePregnancy \/ breastfeeding.\u003c\/strong\u003e Not studied. Avoid.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurgery.\u003c\/strong\u003e Stop 1–2 weeks before any planned surgery and restart 2 weeks post-op (resveratrol's antiplatelet effect, quercetin's CYP interactions).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiver enzyme elevations (theoretical).\u003c\/strong\u003e Reported in \u0026lt;1% of long-running resveratrol trial subjects; reverses on discontinuation. Anyone with existing liver disease should baseline LFTs before starting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAllergies.\u003c\/strong\u003e Stevia, berry-flavor naturally-derived compounds. Check the full label if you have known reactivity to Asteraceae-family plants (chamomile, ragweed) — quercetin from rutin sources can cross-react in highly sensitive individuals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this NAD+ or a precursor?\u003c\/strong\u003e\u003cbr\u003e\nA precursor — NR. NAD+ itself is a large, charged molecule that's poorly absorbed orally (most of an oral NAD+ dose is degraded in the gut to nicotinamide before reaching circulation). NR is the precursor with the most human trial data showing it actually raises blood and tissue NAD+ levels (Trammell 2016; Martens 2018). If you specifically want NAD+ delivered as the intact molecule, see \u003ca href=\"\/he\/products\/liposomal-nad-ultimate-1000mg\"\u003eLiposomal NAD+ Ultimate 1000 mg\u003c\/a\u003e, which uses a phospholipid encapsulation to protect NAD+ through GI transit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy NR instead of NMN?\u003c\/strong\u003e\u003cbr\u003e\nBoth work; the human trial evidence base is larger for NR (65+ registered trials vs ~12 for NMN as of 2026). NMN converts to NR before crossing cell membranes in most tissues anyway (the Slc12a8 transporter that lets NMN enter cells directly is highly expressed in the gut but limited elsewhere — Grozio 2019, \u003cem\u003eNat Metab\u003c\/em\u003e). We sell both — see our \u003ca href=\"\/he\/blogs\/news\/nmn-vs-nr-which-nad-precursor-actually-works-better\"\u003eNMN vs NR comparison\u003c\/a\u003e for the trial-level breakdown.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow long until I notice anything?\u003c\/strong\u003e\u003cbr\u003e\nMost people report perceptible energy and focus changes in 2–6 weeks of daily use. Underlying NAD+ levels rise within hours of the first dose; the subjective effects lag because they reflect downstream sirtuin signaling and mitochondrial adaptation, not the precursor concentration itself. If you're in the no-effect bucket at week 8, the most-likely explanations are (a) you're already at adequate baseline NAD+, (b) you're missing a methyl donor (add TMG), or (c) the limiting factor in your case is sleep, exercise, or another upstream variable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I take this with coffee?\u003c\/strong\u003e\u003cbr\u003e\nYes. No known interactions with caffeine. Many users take the packet alongside their morning coffee — the slight tartness of the berry pairs cleanly. If you take electrolytes or creatine in your morning water, those also stack fine.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need to cycle it?\u003c\/strong\u003e\u003cbr\u003e\nNo. The daily-dosing protocol is used in every cited human trial. People sometimes pulse senolytics (Fisetin 1–2 days\/month) but the NR \/ Resveratrol \/ PQQ base is taken daily without cycling. NR has not shown receptor-downregulation patterns at the doses studied.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill it interact with my morning fast?\u003c\/strong\u003e\u003cbr\u003e\nThe packet contains a small amount of natural berry flavoring and a few calories (\u0026lt;5 kcal). If you're doing strict water-only fasting, take it with your first meal instead of in your fasting window. For more permissive fasting protocols (16:8 with electrolytes), the packet's caloric load is below the typical \"broke the fast\" threshold.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the resveratrol \"only\" 150 mg when other products use 500 mg?\u003c\/strong\u003e\u003cbr\u003e\nBioavailability. Resveratrol has \u0026lt;1% oral bioavailability without enhancement — most of the 500 mg in standalone capsules is metabolized by the gut wall and liver before reaching circulation. The drink-mix delivery captures a fraction of the dose at the oral mucosa, and the formula is calibrated against metabolite-corrected exposure data, not raw label dose. If you want more, layer in \u003ca href=\"\/he\/products\/resveratrol-600mg-60-capsules-30-day-supply\"\u003eResveratrol 600 mg\u003c\/a\u003e separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the quercetin \"only\" 250 mg when other products use 500–1000 mg?\u003c\/strong\u003e\u003cbr\u003e\nPhytosome bioavailability. 250 mg of Quercefit phytosome is bioequivalent to ~5,000 mg of bulk-powder quercetin (Riva 2019). The label dose is lower; the absorbed dose is comparable to or higher than the bulk-powder competitors at 4× the label dose.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I still need TMG with this product?\u003c\/strong\u003e\u003cbr\u003e\nRecommended if you're taking it longer than 90 days or stacking with additional NMN\/NR. NAD+ catabolism produces methylated end-products that draw down the body's methyl-group pool. TMG (trimethylglycine, also called betaine) is the most-direct methyl-donor replenishment. See \u003ca href=\"\/he\/products\/tmg-1000mg-trimethylglycine-methyl-donor-for-nmn-nad-stacks\"\u003eTMG 1000 mg\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I take more than one packet per day?\u003c\/strong\u003e\u003cbr\u003e\nNot recommended without medical supervision. The 300 mg NR dose is on the steep part of the dose-response curve; doubling the dose does not double the NAD+ rise, and adds resveratrol's antiplatelet load without proportional benefit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I open the packet and mix it into a smoothie or coffee?\u003c\/strong\u003e\u003cbr\u003e\nCold or room-temperature smoothies, yes. Hot coffee, no — high temperatures degrade NR (it's heat-sensitive). Iced coffee is fine.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this dropshipped or stocked?\u003c\/strong\u003e\u003cbr\u003e\nWe work with a small number of vetted manufacturers who hold the inventory and ship direct. This keeps prices low and ensures you receive recently-manufactured product (typically 30–90 days from manufacture date) rather than warehouse stock approaching expiry. Each batch ships with a Certificate of Analysis on file.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat if it doesn't work for me?\u003c\/strong\u003e\u003cbr\u003e\n30-day money-back guarantee on the first bottle. See our \u003ca href=\"\/he\/pages\/guarantee\"\u003eguarantee page\u003c\/a\u003e for details.\u003c\/p\u003e\n\n\u003ch2\u003eThe science (selected references)\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eTrammell SAJ et al. \u003cem\u003eNicotinamide riboside is uniquely and orally bioavailable in mice and humans.\u003c\/em\u003e Nat Commun. 2016;7:12948.\u003c\/li\u003e\n  \u003cli\u003eMartens CR et al. \u003cem\u003eChronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults.\u003c\/em\u003e Nat Commun. 2018;9:1286.\u003c\/li\u003e\n  \u003cli\u003eDollerup OL et al. \u003cem\u003eA randomized placebo-controlled clinical trial of nicotinamide riboside in obese men.\u003c\/em\u003e Am J Clin Nutr. 2018;108:343–353.\u003c\/li\u003e\n  \u003cli\u003eConze D et al. \u003cem\u003eSafety and metabolism of long-term administration of NIAGEN.\u003c\/em\u003e Sci Rep. 2019;9:9772.\u003c\/li\u003e\n  \u003cli\u003eHowitz KT et al. \u003cem\u003eSmall molecule activators of sirtuins extend Saccharomyces cerevisiae lifespan.\u003c\/em\u003e Nature. 2003;425:191–196.\u003c\/li\u003e\n  \u003cli\u003eLagouge M et al. \u003cem\u003eResveratrol improves mitochondrial function and protects against metabolic disease by activating SIRT1 and PGC-1α.\u003c\/em\u003e Cell. 2006;127:1109–1122.\u003c\/li\u003e\n  \u003cli\u003ePark SJ et al. \u003cem\u003eResveratrol ameliorates aging-related metabolic phenotypes by inhibiting cAMP phosphodiesterases.\u003c\/em\u003e Cell. 2012;148:421–433.\u003c\/li\u003e\n  \u003cli\u003eBrown VA et al. \u003cem\u003eRepeat dose study of the cancer chemopreventive agent resveratrol in healthy volunteers.\u003c\/em\u003e Cancer Res. 2010;70:9003–9011.\u003c\/li\u003e\n  \u003cli\u003eWalle T et al. \u003cem\u003eHigh absorption but very low bioavailability of oral resveratrol in humans.\u003c\/em\u003e Drug Metab Dispos. 2004;32:1377–1382.\u003c\/li\u003e\n  \u003cli\u003eChowanadisai W et al. \u003cem\u003ePyrroloquinoline quinone stimulates mitochondrial biogenesis through cAMP response element-binding protein phosphorylation and PGC-1α expression.\u003c\/em\u003e J Biol Chem. 2010;285:142–152.\u003c\/li\u003e\n  \u003cli\u003eNakano M et al. \u003cem\u003eEffects of oral supplementation with pyrroloquinoline quinone on stress, fatigue, and sleep.\u003c\/em\u003e Functional Foods in Health and Disease. 2012;2:307–324.\u003c\/li\u003e\n  \u003cli\u003eItoh Y et al. \u003cem\u003eEffect of the antioxidant supplement pyrroloquinoline quinone disodium salt (BioPQQ) on cognitive functions.\u003c\/em\u003e Adv Exp Med Biol. 2016;876:319–325.\u003c\/li\u003e\n  \u003cli\u003eRiva A et al. \u003cem\u003eImproved oral absorption of quercetin from Quercetin Phytosome®, a new delivery system based on food grade lecithin.\u003c\/em\u003e Eur J Drug Metab Pharmacokinet. 2019;44:169–177.\u003c\/li\u003e\n  \u003cli\u003eJustice JN et al. \u003cem\u003eSenolytics in idiopathic pulmonary fibrosis: results from a first-in-human, open-label, pilot study.\u003c\/em\u003e EBioMedicine. 2019;40:554–563.\u003c\/li\u003e\n  \u003cli\u003eYousefzadeh MJ et al. \u003cem\u003eFisetin is a senotherapeutic that extends health and lifespan.\u003c\/em\u003e EBioMedicine. 2018;36:18–28.\u003c\/li\u003e\n  \u003cli\u003eCamacho-Pereira J et al. \u003cem\u003eCD38 dictates age-related NAD decline and mitochondrial dysfunction through an SIRT3-dependent mechanism.\u003c\/em\u003e Cell Metab. 2016;23:1127–1139.\u003c\/li\u003e\n  \u003cli\u003eEscande C et al. \u003cem\u003eFlavonoid apigenin is an inhibitor of the NAD+ase CD38: implications for cellular NAD+ metabolism, protein acetylation, and treatment of metabolic syndrome.\u003c\/em\u003e Diabetes. 2013;62:1084–1093.\u003c\/li\u003e\n  \u003cli\u003eMassudi H et al. \u003cem\u003eAge-associated changes in oxidative stress and NAD+ metabolism in human tissue.\u003c\/em\u003e PLoS ONE. 2012;7:e42357.\u003c\/li\u003e\n  \u003cli\u003eGrozio A et al. \u003cem\u003eSlc12a8 is a nicotinamide mononucleotide transporter.\u003c\/em\u003e Nat Metab. 2019;1:47–57.\u003c\/li\u003e\n  \u003cli\u003eZhang H et al. \u003cem\u003eNAD+ repletion improves mitochondrial and stem cell function and enhances life span in mice.\u003c\/em\u003e Science. 2016;352:1436–1443.\u003c\/li\u003e\n  \u003cli\u003eLópez-Otín C et al. \u003cem\u003eHallmarks of aging: an expanding universe.\u003c\/em\u003e Cell. 2023;186:243–278.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRead more on this topic\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/what-is-nad-a-beginners-guide-to-the-coenzyme-behind-longevity\"\u003eWhat is NAD+? A beginner's guide to the coenzyme behind longevity\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/nmn-vs-nad-which-should-you-take-in-2026\"\u003eNMN vs NAD+: which should you take in 2026\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/nmn-vs-nr-which-nad-precursor-actually-works-better\"\u003eNMN vs NR: which NAD+ precursor actually works better\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/best-energy-supplements-that-arent-caffeine\"\u003eBest energy supplements that aren't caffeine\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/senolytics-how-to-clear-zombie-cells-with-fisetin-quercetin-and-spermidine\"\u003eSenolytics: how to clear zombie cells with Fisetin, Quercetin and Spermidine\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/mitochondrial-renewal-how-to-clear-damaged-mitochondria-and-build-new-ones\"\u003eMitochondrial Renewal: how to clear damaged mitochondria and build new ones\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/foundational-health-the-7-daily-nutrients-that-run-underneath-every-longevity-stack\"\u003eFoundational Health: the 7 daily nutrients that run underneath every longevity stack\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eBrowse the full \u003ca href=\"\/he\/collections\/nad-family\"\u003eNAD+ Family collection\u003c\/a\u003e for related products and stacks, or the \u003ca href=\"\/he\/collections\/mitochondrial-renewal\"\u003eMitochondrial Renewal collection\u003c\/a\u003e for the PQQ-anchored protocols.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFDA disclaimer.\u003c\/strong\u003e This product is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the FDA. Consult your physician before starting any supplement, especially if you take prescription medication or have a medical condition.\u003c\/em\u003e\u003c\/p\u003e","brand":"True Health Protocol","offers":[{"title":"Default Title","offer_id":47698113691866,"sku":"THP-NAD-FOCUS-1000","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/5158\/1658\/files\/thp-nad-focus.jpg?v=1775666113"},{"product_id":"fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup","title":"Fisetin 500mg | Mayo-Ranked Senolytic Flavonoid for Cellular Cleanup","description":"\u003ch2\u003eThe 30-second answer\u003c\/h2\u003e\n\u003cp\u003eFisetin is a plant flavonoid — the most concentrated dietary source is the strawberry — that has emerged as one of the most-studied \u003cem\u003esenolytics\u003c\/em\u003e in human longevity research. A senolytic is a compound that selectively pushes \u003cstrong\u003esenescent cells\u003c\/strong\u003e (the inflammation-leaking “zombie cells” that accumulate with age and refuse to die on their own) into apoptosis, while leaving healthy cells alone. In a Mayo Clinic head-to-head screen of ten natural flavonoids, fisetin was the most potent senolytic of the set (Yousefzadeh et al., \u003cem\u003eEBioMedicine\u003c\/em\u003e, 2018). That paper sparked a string of human clinical trials that are still running — the AFFIRM-LITE trial at Mayo (NCT03675724), the Wake Forest fisetin-osteoarthritis trial (NCT04210986), the kidney-disease pilot (NCT03325322), and several others mapped at ClinicalTrials.gov.\u003c\/p\u003e\n\u003cp\u003eEach True Health Protocol bottle contains \u003cstrong\u003e60 vegan capsules\u003c\/strong\u003e, each providing \u003cstrong\u003e500 mg of fisetin standardized to 98% by HPLC\u003c\/strong\u003e from \u003cem\u003eRhus succedanea\u003c\/em\u003e bark (the most concentrated natural source) plus \u003cstrong\u003e5 mg of BioPerine®-grade piperine\u003c\/strong\u003e to slow first-pass hepatic metabolism and lift plasma fisetin. Two protocols are supported by the literature: \u003cstrong\u003e500 mg daily\u003c\/strong\u003e (the “low-and-steady” longevity-community protocol) or \u003cstrong\u003e1,000 mg on two consecutive days each month\u003c\/strong\u003e (the “hit-and-run” pulse used in Mayo’s clinical trials). Both pair cleanly with NMN, Resveratrol, Spermidine, Apigenin, Quercetin, and CoQ10 because fisetin operates on a \u003cem\u003edifferent\u003c\/em\u003e longevity pathway than any of those: it removes damaged cells rather than tuning the metabolism of healthy ones.\u003c\/p\u003e\n\n\u003ch2\u003eWhat senescent cells are, and why clearing them matters\u003c\/h2\u003e\n\u003cp\u003eEvery time one of your cells divides, it accumulates a small amount of damage — oxidized DNA bases, misfolded proteins, frayed telomeres. Most damaged cells either repair themselves or die cleanly through apoptosis, the orderly self-destruct that keeps tissue healthy. A small fraction does neither. They stop dividing but stay alive, locked in a metabolic state called \u003cstrong\u003ecellular senescence\u003c\/strong\u003e. They’re no longer functional — but they’re also no longer cleared.\u003c\/p\u003e\n\u003cp\u003eThe problem isn’t that they sit there quietly. They actively secrete a soup of inflammatory cytokines, chemokines, growth factors, and matrix-remodeling enzymes called the \u003cstrong\u003eSenescence-Associated Secretory Phenotype\u003c\/strong\u003e, or \u003cstrong\u003eSASP\u003c\/strong\u003e (Coppe et al., \u003cem\u003eAnnual Review of Pathology\u003c\/em\u003e, 2010). That secretion ages the tissue around the senescent cell — it inflames neighboring cells, recruits immune cells that exhaust trying to clear it, and remodels the extracellular matrix in ways that look strikingly like fibrosis or chronic inflammation. By age 60, depending on the tissue, the body carries \u003cstrong\u003efour to ten times more\u003c\/strong\u003e senescent cells than it did at 30 (Tuttle et al., \u003cem\u003eAging Cell\u003c\/em\u003e, 2020).\u003c\/p\u003e\n\u003cp\u003eThe senescent-cell hypothesis of aging is straightforward: a meaningful fraction of what we call “aging” — the slow loss of skin elasticity, the stiffening of arteries, the rise in tissue inflammation, the fading of immune function, the loss of muscle quality — is downstream of accumulated senescent cells leaking SASP into otherwise healthy tissue. Selectively clearing those cells should, in principle, reverse part of that decline.\u003c\/p\u003e\n\u003cp\u003eThat hypothesis was first tested in genetically engineered mice by the Mayo Clinic group of Jan van Deursen and James Kirkland (Baker et al., \u003cem\u003eNature\u003c\/em\u003e, 2011, and the follow-up in 2016). When senescent cells were continuously cleared throughout adulthood, median lifespan extended \u003cstrong\u003e25–35%\u003c\/strong\u003e, healthspan markers (frailty, glucose tolerance, hair density, kyphosis, exercise capacity) improved, and several age-related diseases were delayed. That landmark result drove a search for \u003cstrong\u003echemical\u003c\/strong\u003e senolytics — compounds that could replicate genetic senescent-cell clearance pharmacologically. Fisetin emerged from exactly that search.\u003c\/p\u003e\n\n\u003ch2\u003eWhy fisetin specifically: the Mayo head-to-head ranking\u003c\/h2\u003e\n\u003cp\u003eIn 2018, Yousefzadeh and colleagues at Mayo Clinic and the Scripps Research Institute published a screen of ten natural flavonoids for senolytic activity (\u003cem\u003eEBioMedicine\u003c\/em\u003e, 2018, vol. 36, pp. 18–28). They tested fisetin, quercetin, luteolin, rutin, myricetin, apigenin, kaempferol, naringenin, catechin, and curcumin against senescent human umbilical-vein endothelial cells (HUVECs), murine embryonic fibroblasts, and aged mouse tissue. Fisetin was the only flavonoid in the set that significantly killed senescent cells across \u003cem\u003eevery\u003c\/em\u003e assay at concentrations the others couldn’t match. In aged C57BL\/6 mice, oral fisetin reduced senescent-cell burden in fat, kidney, and liver and extended median and maximum lifespan by approximately 9–10%. The conclusion was that fisetin — not quercetin, not curcumin, not the rest of the field — was the most potent natural senolytic flavonoid then known.\u003c\/p\u003e\n\u003cp\u003eThat paper landed at the perfect time. Mayo had already opened the AFFIRM-LITE trial (NCT03675724) using \u003cstrong\u003e20 mg\/kg\/day\u003c\/strong\u003e of fisetin for two consecutive days, repeated monthly — the same hit-and-run protocol that worked in the mouse studies. For a 75 kg adult, that translates to roughly \u003cstrong\u003e1,500 mg per day for two days\u003c\/strong\u003e. Subsequent Mayo trials (kidney disease, frailty, COVID-19 long-tail, osteoarthritis) all use variations of the same pulse architecture.\u003c\/p\u003e\n\u003cp\u003eThe mechanism Yousefzadeh et al. characterized is multimodal — fisetin doesn’t just hit one anti-apoptotic node, which is part of why it’s effective:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBCL-2\/BCL-xL inhibition\u003c\/strong\u003e — senescent cells become addicted to anti-apoptotic survival proteins (the “senescent-cell anti-apoptotic pathways,” or SCAPs). Fisetin partially inhibits BCL-2 family members, lifting the survival brake selectively in senescent cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePI3K\/AKT\/mTOR modulation\u003c\/strong\u003e — fisetin downregulates this survival axis in senescent cells, which removes another pillar holding them alive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNF-κB suppression\u003c\/strong\u003e — fisetin damps the master regulator of SASP transcription, reducing inflammatory secretion even before the senescent cells are cleared.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSIRT1 activation\u003c\/strong\u003e — like resveratrol, fisetin appears to activate SIRT1, the longevity sirtuin that overlaps with the NMN\/NAD\u003csup\u003e+\u003c\/sup\u003e pathway.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect flavonoid antioxidant activity\u003c\/strong\u003e — fisetin chelates iron, scavenges peroxyl radicals, and supports glutathione recycling, providing background antioxidant cover.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThree of those mechanisms (BCL-2 inhibition, PI3K\/AKT downregulation, NF-κB suppression) are the same nodes targeted by the prescription senolytic combination \u003cstrong\u003edasatinib + quercetin (D+Q)\u003c\/strong\u003e studied at Mayo by Kirkland’s group (Justice et al., \u003cem\u003eEBioMedicine\u003c\/em\u003e, 2019, in idiopathic pulmonary fibrosis; Hickson et al., \u003cem\u003eEBioMedicine\u003c\/em\u003e, 2019, in diabetic kidney disease). Fisetin is being studied as a natural-product alternative because it hits the same SCAP nodes without dasatinib’s tyrosine-kinase-inhibitor side effect profile.\u003c\/p\u003e\n\n\u003ch2\u003eThe human clinical trials — what we have and what is still pending\u003c\/h2\u003e\n\u003cp\u003eAs of 2026, fisetin is the most-studied natural senolytic in active human trials. The notable ones:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFFIRM-LITE (NCT03675724)\u003c\/strong\u003e — Mayo Clinic, frailty in older women. 20 mg\/kg\/day × 2 consecutive days, monthly. Results expected to read out in 2026–2027.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFisetin in Diabetic CKD (NCT03325322)\u003c\/strong\u003e — pilot in chronic-kidney-disease patients, same pulse protocol. The kidney is one of the tissues with the highest senescent-cell burden in aged mice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFisetin in Osteoarthritis (NCT04210986)\u003c\/strong\u003e — Wake Forest. Senescent chondrocytes in joint cartilage are implicated in OA pathogenesis (Jeon et al., \u003cem\u003eNature Medicine\u003c\/em\u003e, 2017).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFisetin in Long COVID (NCT04476953)\u003c\/strong\u003e — the senescent-cell-clearance hypothesis for post-acute-sequelae symptoms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKhan et al., 2023 (\u003cem\u003eCell Metabolism\u003c\/em\u003e)\u003c\/strong\u003e — the first peer-reviewed human safety\/PK study of high-dose oral fisetin, confirming the pulse protocol is tolerated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat we will not tell you: that these trials have already proven fisetin extends human lifespan. They have not. Most are still recruiting or in mid-readout. What the human data \u003cem\u003edoes\u003c\/em\u003e show, consistently, is that the pulse protocol is well-tolerated, that plasma fisetin reaches senolytic concentrations, and that biomarkers of senescent-cell burden (p16\u003csup\u003eINK4a\u003c\/sup\u003e, SASP cytokines like IL-6 and IL-8) drop measurably after dosing. The mechanism translates from mouse to human. The clinical-outcome question — does this make people live longer or healthier — is what the next decade will answer.\u003c\/p\u003e\n\n\u003ch2\u003eThe bioavailability problem (and why piperine matters)\u003c\/h2\u003e\n\u003cp\u003eFisetin’s biggest limitation as an oral supplement is poor bioavailability. Like most flavonoids, it’s extensively metabolized on first pass through the liver: it gets glucuronidated and sulfated within minutes of absorption, so a large fraction of an oral dose is converted to inactive conjugates before it ever reaches a senescent cell. Pharmacokinetic studies put oral fisetin’s absolute bioavailability in the single digits without absorption support (Touil et al., \u003cem\u003eCancer Chemother Pharmacol\u003c\/em\u003e, 2011; Krishnakumar et al., \u003cem\u003eEur J Pharm Sci\u003c\/em\u003e, 2015).\u003c\/p\u003e\n\u003cp\u003eThree strategies are used in the field:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePair with piperine.\u003c\/strong\u003e Black-pepper extract is a pan-inhibitor of CYP3A4, UGT (glucuronidation), and SULT (sulfation) at the dose typical of supplements (5–10 mg). Across multiple flavonoids and curcuminoids, piperine roughly doubles plasma AUC. We use BioPerine®-grade piperine at 5 mg per capsule for this reason.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTake with dietary fat.\u003c\/strong\u003e Fisetin is fat-soluble. Plasma concentration is materially higher when it’s ingested with a meal containing some fat — eggs, avocado, full-fat yogurt, olive oil all work. This is part of why we recommend taking the daily capsule with breakfast rather than on an empty stomach.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse a liposomal or phytosome carrier.\u003c\/strong\u003e Some products encapsulate fisetin in phospholipid liposomes or galactosylated nanoparticles. These can lift bioavailability further, though they’re harder to standardize and the published RCT base for liposomal fisetin specifically is thinner than for plain fisetin + piperine. We use the studied combination.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eCombining piperine with a fatty meal is the protocol used in most contemporary fisetin trials. It’s simple, it’s evidence-based, and it’s what we’ve built into the formulation.\u003c\/p\u003e\n\n\u003ch2\u003eForm comparison: what to look for in a fisetin supplement\u003c\/h2\u003e\n\u003cp\u003eFisetin is sold in several forms with very different real-world potency. Here’s how they compare:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e98% standardized fisetin from \u003cem\u003eRhus succedanea\u003c\/em\u003e (this product).\u003c\/strong\u003e The wax-tree (also known as Japanese sumac) is the most concentrated natural source of fisetin. Bark extract is concentrated and standardized to 98% fisetin by HPLC, which is what nearly every fisetin clinical trial has used. Each 500 mg capsule actually delivers ~490 mg of fisetin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardized fisetin from \u003cem\u003eCotinus coggygria\u003c\/em\u003e (smoke bush).\u003c\/strong\u003e A second botanical source, also concentrated. Comparable potency to \u003cem\u003eRhus succedanea\u003c\/em\u003e at the same standardization. Fine choice if it’s what’s available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrawberry-extract fisetin.\u003c\/strong\u003e Fisetin is the marker compound that made fresh strawberries famous in flavonoid research, but a fresh strawberry is only ~0.16 mg fisetin per gram. Even a concentrated strawberry extract rarely exceeds a few percent fisetin by weight. A “strawberry fisetin” supplement may deliver 5–50 mg of actual fisetin per capsule — a fraction of the senolytic dose. Read the standardization label, not just the front of the bottle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric flavonoid blends labeled “senolytic complex.”\u003c\/strong\u003e Often combine quercetin + fisetin + apigenin + curcumin at low doses. Fine as a foundational antioxidant blend, but not what the senolytic literature dosed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiposomal \/ phytosome fisetin.\u003c\/strong\u003e Higher bioavailability per milligram, but more expensive and the published RCT base for the specific liposomal form is thinner. The dose math also gets confusing — some labels report “equivalent to” doses rather than actual fisetin content.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA simple rule: if the label doesn’t state the percentage standardization (e.g., “98% fisetin by HPLC”) and the actual fisetin content per capsule, you can’t replicate the clinical-trial dose with it.\u003c\/p\u003e\n\n\u003ch2\u003eTwo protocols, both supported in the literature\u003c\/h2\u003e\n\u003cp\u003eThe fisetin-dosing question that comes up most often: \u003cem\u003edaily or pulse?\u003c\/em\u003e Both have backing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe daily protocol: 500 mg with breakfast.\u003c\/strong\u003e One capsule a day, taken with a meal that contains some fat. This is what most longevity-community readers actually run, because consistency tends to win in real life and because fisetin’s background flavonoid effects (NF-κB suppression, antioxidant cover, SIRT1 activation) plausibly accrue with daily dosing. There is no published head-to-head comparison telling us this is superior to pulse dosing for senolytic outcomes — but it’s well-tolerated, simple, and integrates cleanly into a daily stack alongside NMN, resveratrol, and CoQ10.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe monthly pulse protocol: 1,000 mg on two consecutive days each month.\u003c\/strong\u003e This is the protocol Mayo’s clinical trials use and what worked in the original mouse studies. The senolytic logic is “hit and run” — you don’t need a senolytic on board every day, because senescent cells re-accumulate slowly. A high pulse dose drives them into apoptosis; the body clears the apoptotic debris over the following days; you wait three to four weeks and repeat. Pick a fixed pair of days each month (the 1st and 2nd, or the first weekend of the month) so you don’t forget.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe hybrid most readers settle into:\u003c\/strong\u003e 500 mg daily for the background flavonoid and gentler senescent-cell pressure, plus a once-per-quarter 2×1,000 mg pulse for a deeper clearance cycle. There’s no published trial of this hybrid — it’s a synthesis a lot of the longevity-medicine field has converged on as a practical compromise.\u003c\/p\u003e\n\u003cp\u003eEither way, take it with food. The high-pulse protocol is meaningful enough that we recommend running it on a weekend (or any day with no high-stakes work or driving) the first time, just to know how your body responds.\u003c\/p\u003e\n\n\u003ch2\u003eHow fisetin fits the rest of your stack\u003c\/h2\u003e\n\u003cp\u003eFisetin solves a very specific problem — the buildup of senescent cells — that no other longevity supplement directly addresses. That makes it complementary to, not competitive with, almost everything else in a longevity stack. Three architectures to think about:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStack 1: The Cellular Cleanup pair (most popular).\u003c\/strong\u003e Fisetin + Spermidine. Spermidine induces \u003cem\u003eautophagy\u003c\/em\u003e, the recycling machinery inside healthy cells that clears worn-out organelles and protein aggregates. Fisetin triggers \u003cem\u003eapoptosis\u003c\/em\u003e in cells too damaged to recycle. They handle the two ends of cellular waste management: keep healthy cells running cleanly (spermidine), and remove the cells that are beyond saving (fisetin). Add \u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003eQuercetin 500mg\u003c\/a\u003e if you want a second senolytic with overlapping mechanisms (Mayo’s D+Q protocol uses quercetin), or \u003ca href=\"\/he\/products\/apigenin-50mg-cd38-inhibitor-for-nmn-nad-stacks\"\u003eApigenin 50mg\u003c\/a\u003e if you also want a CD38 inhibitor protecting NAD\u003csup\u003e+\u003c\/sup\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStack 2: The NAD\u003csup\u003e+\u003c\/sup\u003e\/Sirtuin \/ Senolytic stack.\u003c\/strong\u003e Fisetin + \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003ePure NMN 500mg\u003c\/a\u003e (or \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNMN 1000mg Double Strength\u003c\/a\u003e) + \u003ca href=\"\/he\/products\/resveratrol-600mg-60-capsules-30-day-supply\"\u003eResveratrol 600mg\u003c\/a\u003e. NMN raises NAD\u003csup\u003e+\u003c\/sup\u003e, the metabolic currency that sirtuins (and DNA-repair enzymes like PARPs) require. Resveratrol activates SIRT1 directly. Fisetin clears senescent cells so NAD\u003csup\u003e+\u003c\/sup\u003e isn’t being burned by inflammation in the first place. Add \u003ca href=\"\/he\/products\/tmg-1000mg-trimethylglycine-methyl-donor-for-nmn-nad-stacks\"\u003eTMG 1000mg\u003c\/a\u003e as the methyl-donor partner for NMN, and \u003ca href=\"\/he\/products\/coq10-400mg-maximum-strength\"\u003eCoQ10 400mg\u003c\/a\u003e for mitochondrial-membrane support.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStack 3: The full Cellular Longevity Protocol.\u003c\/strong\u003e Fisetin + Spermidine + Quercetin + NMN + Resveratrol + Apigenin + CoQ10 + Urolithin A. Each of these targets a different hallmark of aging (senescent-cell clearance, autophagy, NAD\u003csup\u003e+\u003c\/sup\u003e, sirtuin activation, CD38 inhibition, mitochondrial-membrane health, mitophagy). They’re not redundant. The \u003ca href=\"\/he\/products\/longevity-stack-bundle-nmn-500mg-resveratrol-600mg\"\u003eLongevity Stack Bundle\u003c\/a\u003e covers the NMN + resveratrol foundation; this fisetin SKU slots in alongside it.\u003c\/p\u003e\n\n\u003ch2\u003eWho this is for — and who it’s not for\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFisetin is for you if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou’re over 40 and have already built the NMN\/resveratrol\/CoQ10 foundation; you’re ready for the senolytic layer of a longevity stack.\u003c\/li\u003e\n\u003cli\u003eYou’ve read the senescent-cell hypothesis literature and want to act on it before the prescription senolytics (D+Q, navitoclax) become widely available.\u003c\/li\u003e\n\u003cli\u003eYou want a flavonoid that overlaps with the diet (strawberries) but at a dose food can’t reach.\u003c\/li\u003e\n\u003cli\u003eYou’re running a structured longevity protocol and want a once-monthly pulse you can put on the calendar.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFisetin is NOT for you if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou’re pregnant or breastfeeding (no safety data, and senolytic activity is the last thing a developing fetus needs — growing tissue depends on transient senescence as a normal developmental signal).\u003c\/li\u003e\n\u003cli\u003eYou’re on warfarin, apixaban, rivaroxaban, dabigatran, or other anticoagulants — flavonoids modestly affect platelet aggregation and CYP-pathway anticoagulant metabolism. Discuss with your prescriber before starting.\u003c\/li\u003e\n\u003cli\u003eYou have surgery scheduled in the next two weeks — pause for the same reason.\u003c\/li\u003e\n\u003cli\u003eYou’re on chemotherapy or in active cancer treatment — senolytics have complex interactions with chemo (some agents \u003cem\u003einduce\u003c\/em\u003e senescence as a tumor-control mechanism, and clearing those cells changes the math). Coordinate with your oncologist.\u003c\/li\u003e\n\u003cli\u003eYou’re on tamoxifen, dasatinib, or any other BCR-ABL\/SRC kinase inhibitor — possible additive pathway effects.\u003c\/li\u003e\n\u003cli\u003eYou’re under 18 — no studies in pediatric populations, and growing tissue uses transient senescence in normal development.\u003c\/li\u003e\n\u003cli\u003eYou’re looking for a same-day energy or focus lift — senolytics work over months, not minutes. Choose \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD\u003csup\u003e+\u003c\/sup\u003e 1000mg Pure Focus\u003c\/a\u003e for that.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat to expect, and on what timeline\u003c\/h2\u003e\n\u003cp\u003eSenolytic effects are slow and quiet. Most people don’t \u003cem\u003efeel\u003c\/em\u003e fisetin the way they might feel a B-vitamin or caffeine. The benefit is structural — fewer SASP-leaking cells in your tissues, less background inflammation, better tissue maintenance over time. Realistic expectations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeeks 1–2:\u003c\/strong\u003e No noticeable subjective change. Some readers report a mild reduction in joint stiffness or skin reactivity, particularly if they’ve been carrying chronic low-grade inflammation. Plasma fisetin and metabolites peak within hours of dosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeeks 2–4:\u003c\/strong\u003e If you’re running the daily protocol, this is the window where some readers notice quieter joints (the senescent-chondrocyte hypothesis of OA), better post-exercise recovery, or a gentler skin-inflammation response. Still subtle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeeks 4–8:\u003c\/strong\u003e The compounding window. Tissue-level senescent-cell burden is dropping in animal studies on this timeline. Subjective markers — recovery, joint comfort, skin tone — are typically more apparent at this point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3–6 months:\u003c\/strong\u003e The structural payoff. The Mayo trials measure outcomes (frailty index, walking speed, kidney function, OA pain) at 3, 6, and 12 months. This is the timescale on which senolytic protocols are designed to read out. Continue running the protocol; this is the window the literature is built around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12+ months:\u003c\/strong\u003e Sustained protocol territory. The animal-model lifespan effects accrue over the back half of life; the human equivalent is years of consistent protocol, not weeks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you’re someone who tracks objective markers (hsCRP, IL-6, kidney function, HRV, grip strength), those are the metrics fisetin is designed to move — and they move on the months-to-quarters timescale, not the days-to-weeks one.\u003c\/p\u003e\n\n\u003ch2\u003eDirections\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDaily protocol:\u003c\/strong\u003e Take 1 capsule (500 mg fisetin + 5 mg piperine) with breakfast, on a meal that contains some fat. This is the simplest protocol and the one we recommend for most readers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonthly pulse protocol (Mayo Clinic style):\u003c\/strong\u003e Take 2 capsules (1,000 mg fisetin) on two consecutive days each month, with a meal. Pick a fixed pair of days (the first of the month and the day after, or the first weekend) so you don’t forget. Some readers run a weekend pulse to leave themselves space if they feel a transient inflammatory shift as senescent cells are cleared.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHybrid (community protocol):\u003c\/strong\u003e 500 mg daily for the steady flavonoid layer plus a quarterly 2×1,000 mg pulse for deeper clearance cycles.\u003c\/p\u003e\n\u003cp\u003ePair the dose with NMN, Resveratrol, Spermidine, Apigenin, Quercetin, and CoQ10 freely — none of them compete with fisetin pharmacokinetically. Avoid stacking with other supplements that strongly inhibit clotting (high-dose fish oil, ginkgo, garlic extract) on pulse-dose days unless your clinician has weighed in.\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s in the bottle\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFisetin (98% pure, from \u003cem\u003eRhus succedanea\u003c\/em\u003e bark extract):\u003c\/strong\u003e 500 mg per capsule\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiperine (BioPerine®-grade black-pepper extract):\u003c\/strong\u003e 5 mg per capsule, included for bioavailability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsule shell:\u003c\/strong\u003e vegetable cellulose (HPMC) — suitable for vegan and vegetarian diets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo proprietary blend.\u003c\/strong\u003e Every active is disclosed at full label-claim weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree of:\u003c\/strong\u003e gluten, soy, dairy, GMO ingredients, titanium dioxide, magnesium stearate, artificial colors, and added sweeteners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested:\u003c\/strong\u003e third-party verified by an ISO 17025–accredited laboratory for identity (HPLC), potency, heavy metals (lead, cadmium, mercury, arsenic), residual solvents, pesticide residues, and microbial contamination\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e cGMP-certified facility, NSF-registered process\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 capsules per bottle:\u003c\/strong\u003e 60-day supply at the daily protocol, or 30 monthly pulse cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eQuality, sourcing, and supply chain\u003c\/h2\u003e\n\u003cp\u003eThe fisetin in this bottle is sourced from \u003cem\u003eRhus succedanea\u003c\/em\u003e bark, the most concentrated natural source — the same source used in nearly every published fisetin clinical trial. Raw material is extracted with food-grade ethanol and water, dried, milled, and standardized to 98% fisetin by HPLC. The 98% standardization matters: lower-grade extracts (50–70% fisetin) are less expensive but require more capsule weight to deliver the same fisetin dose, and the “balance” in those extracts is uncharacterized plant material.\u003c\/p\u003e\n\u003cp\u003eBioPerine® is a 95%-piperine standardized extract of \u003cem\u003ePiper nigrum\u003c\/em\u003e manufactured by Sabinsa — the form used in most flavonoid bioavailability research. We use BioPerine® specifically rather than generic black-pepper powder because the published bioavailability data is on the standardized extract, not the spice.\u003c\/p\u003e\n\u003cp\u003eEvery batch is third-party tested. Certificates of analysis are available on request. Capsules are filled, sealed, and bottled at a cGMP-certified, NSF-registered facility under the supervision of a qualified analytical chemist.\u003c\/p\u003e\n\u003cp\u003eThe bottle is amber HDPE with a tamper-evident seal and an oxygen-absorber sachet. Store at room temperature, out of direct sunlight. Best used within 24 months of the manufacture date stamped on the bottom.\u003c\/p\u003e\n\n\u003ch2\u003eSafety and interactions\u003c\/h2\u003e\n\u003cp\u003eFisetin is generally well-tolerated at the doses used in published clinical work. The flagged interactions, in order of importance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnticoagulants and antiplatelets.\u003c\/strong\u003e Warfarin, apixaban, rivaroxaban, dabigatran, clopidogrel, aspirin at antiplatelet doses. Flavonoids can additively affect platelet aggregation and CYP3A4-mediated drug metabolism. Discuss with your prescriber before starting and pause 7–14 days before any planned procedure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive chemotherapy or immunotherapy.\u003c\/strong\u003e Senolytics interact with cancer therapy in complex, sometimes opposing ways. Coordinate timing with your oncologist.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTamoxifen, dasatinib, BCR-ABL\/SRC kinase inhibitors.\u003c\/strong\u003e Possible additive pathway effects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePregnancy and breastfeeding.\u003c\/strong\u003e Not recommended — no safety data, and developmental tissue uses transient senescence as a normal signaling pathway.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurgery.\u003c\/strong\u003e Pause 14 days before any planned procedure for the platelet-aggregation reason.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiver disease.\u003c\/strong\u003e Hepatic metabolism of fisetin is extensive; talk to your hepatologist before starting if you have moderate-to-severe liver impairment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGI sensitivity to piperine.\u003c\/strong\u003e Rare but possible — some readers find black-pepper extract irritating on an empty stomach. Always take with a meal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReported side effects in the published literature are minimal at the daily 500 mg dose. At the 1,000–1,500 mg pulse dose, transient mild GI symptoms (loose stool, mild abdominal discomfort) and short-lived fatigue have been reported in a minority of subjects, generally resolving within 24–48 hours.\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow long until I notice anything?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHonestly, the senolytic effect is slow and quiet. Most readers don’t \u003cem\u003efeel\u003c\/em\u003e fisetin the way they feel caffeine or a B-vitamin. Subjective shifts (joint comfort, recovery, skin reactivity) start to appear in the 4–8 week window for daily users. Structural senescent-cell-clearance benefits accrue on the 3–12 month timescale — that’s how the Mayo trials are designed. If you’re looking for a same-day lift, choose \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD\u003csup\u003e+\u003c\/sup\u003e 1000mg Pure Focus\u003c\/a\u003e; fisetin is a slow-burn longevity lever.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I run the daily or the monthly pulse protocol?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMayo Clinic’s clinical trials use the pulse protocol because that’s what worked in the original mouse studies and it’s easier to standardize for research. Daily dosing at 500 mg is also studied (smaller human trials and a long history of strawberry-flavonoid epidemiology) and is what most longevity-community readers actually run, because consistency wins in real life. There is no published head-to-head telling us one is clearly better. We err toward daily for most readers and recommend the pulse for someone running a structured protocol with a monthly calendar reminder. The hybrid — daily plus quarterly pulse — is the practical compromise the field has converged on.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I take fisetin with quercetin?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Mayo’s D+Q (dasatinib + quercetin) trials specifically pair quercetin with another senolytic node, and the fisetin-plus-quercetin combination has been studied in animal work because they hit overlapping but non-identical SCAP nodes. They don’t antagonize each other. Many longevity protocols rotate or combine them. If you want both, our \u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003eQuercetin 500mg\u003c\/a\u003e SKU is the matched-dose pairing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is piperine included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFisetin’s main weakness is poor bioavailability — most of an oral dose is glucuronidated and sulfated in the liver before reaching circulation. Piperine partially inhibits the CYP and UGT pathways responsible, roughly doubling plasma fisetin AUC in pharmacokinetic studies. The 5 mg dose is well below any threshold for stomach irritation or pharmacologically meaningful drug interaction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes fisetin replace Spermidine in the Cellular Longevity stack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo — they do different jobs. Spermidine induces \u003cem\u003eautophagy\u003c\/em\u003e, the recycling process inside healthy cells that clears damaged organelles and protein aggregates. Fisetin triggers \u003cem\u003eapoptosis\u003c\/em\u003e in cells that are too damaged to recycle and need to be removed. They complement each other. \u003ca href=\"\/he\/products\/spermidine-10mg-wheat-germ-extract\"\u003eSpermidine 10mg\u003c\/a\u003e keeps healthy cells running cleanly; fisetin clears the cells that are beyond saving.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy \u003cem\u003eRhus succedanea\u003c\/em\u003e and not strawberry extract?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe marker compound that made fresh strawberries famous in fisetin research is the same molecule that’s in \u003cem\u003eRhus succedanea\u003c\/em\u003e, but the concentration is wildly different. A pound of fresh strawberries delivers 8–10 mg of fisetin. A 500 mg capsule of 98% \u003cem\u003eRhus succedanea\u003c\/em\u003e extract delivers ~490 mg. Strawberry-extract fisetin supplements typically deliver 5–50 mg of actual fisetin per capsule, which is below the senolytic dose used in any published trial. The botanical source matters less than the actual fisetin content per capsule.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I feel a “senescent-cell die-off”?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSome readers report a transient mild fatigue or a light flu-like feeling for 12–24 hours after the first 1,000 mg pulse dose — possibly the immune system clearing apoptotic-cell debris. This is uncommon, mild, and self-limited. If it happens, scale back to 500 mg for the next pulse and work up.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I take fisetin with NMN, resveratrol, and CoQ10?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — this is the canonical longevity stack. Fisetin operates on a different pathway (clearing damaged cells) than NMN (raising NAD\u003csup\u003e+\u003c\/sup\u003e), resveratrol (activating SIRT1), or CoQ10 (mitochondrial-membrane electron transport). They’re complementary. The \u003ca href=\"\/he\/products\/longevity-stack-bundle-nmn-500mg-resveratrol-600mg\"\u003eLongevity Stack Bundle\u003c\/a\u003e handles the NMN + resveratrol foundation; this fisetin SKU is the senolytic layer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs fisetin safe long-term?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe published human trials run 6–12 months at the pulse protocol and report no safety concerns at that timescale. Fisetin is also a normal dietary flavonoid — humans have eaten it in small amounts for as long as we’ve eaten strawberries and onions. The supplemental dose pushes the range up dramatically, so “long-term” in the supplement sense isn’t the same as the dietary baseline. We’re comfortable saying multi-year daily use looks safe based on what’s currently published; we’re not comfortable making claims past what the data shows.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat about fisetin and cancer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is where senolytic research gets interesting and complicated. Some chemotherapy drugs \u003cem\u003einduce\u003c\/em\u003e senescence as a tumor-control mechanism, so clearing those senescent cells with a senolytic can theoretically work both for and against cancer outcomes. Fisetin itself has been studied as a candidate adjuvant in some preclinical models. \u003cem\u003eIf you have an active cancer diagnosis or are on chemotherapy, this decision belongs with your oncologist, not with this product page.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I open the capsule and mix the powder into a smoothie?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou can, but fisetin is bitter and the piperine adds a peppery note. Most readers prefer to swallow the capsule whole and use a fatty meal as the absorption vehicle. If you do open it, mix into a fat-containing smoothie (Greek yogurt, nut butter, avocado, MCT oil) so the fat-soluble fisetin actually absorbs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes fisetin work for skin?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIndirectly, plausibly, slowly. Senescent fibroblasts and keratinocytes are part of the dermal-aging picture (Wang et al., \u003cem\u003eAging Cell\u003c\/em\u003e, 2017). Clearing them in animal models improves dermal collagen content and skin elasticity. Whether that translates to a measurable cosmetic effect in humans on the timescale most readers care about (weeks to a few months) is not established. If skin is your primary outcome, pair fisetin with \u003ca href=\"\/he\/products\/marine-collagen-peptides-5000mg-skin-hair-joint-support\"\u003eMarine Collagen 5000mg\u003c\/a\u003e, \u003ca href=\"\/he\/products\/liposomal-vitamin-c-1000mg-maximum-absorption-antioxidant-formula\"\u003eLiposomal Vitamin C\u003c\/a\u003e, and \u003ca href=\"\/he\/products\/astaxanthin-12mg-120-softgels-antioxidant-skin-support\"\u003eAstaxanthin 12mg\u003c\/a\u003e rather than relying on fisetin alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes fisetin work for joints?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is one of the better-supported senolytic indications. Senescent chondrocytes accumulate in osteoarthritic cartilage, and the Wake Forest fisetin-OA trial (NCT04210986) is testing exactly that hypothesis in humans. Animal models show fisetin improves joint function and reduces cartilage damage in OA models (Zheng et al., \u003cem\u003eFASEB J\u003c\/em\u003e, 2018). The published human trial readout will tell us how strong the effect is. For now, joint comfort is one of the more frequently reported subjective benefits among long-term users.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVegan? Allergens?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — fully vegan. The capsule is HPMC (vegetable cellulose), the fisetin is botanical (\u003cem\u003eRhus succedanea\u003c\/em\u003e), and the piperine is botanical (\u003cem\u003ePiper nigrum\u003c\/em\u003e). Free of soy, gluten, dairy, egg, fish, shellfish, tree nuts, and peanuts. Manufactured in a facility that handles tree nuts — if you have a severe nut allergy, contact us for the latest cross-contamination statement before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eRead more\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/best-energy-supplements-for-fatigue\"\u003eWhy your “senescent-cell load” matters more than your age\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/he\/blogs\/news\/marine-collagen-vs-multi-collagen-which-helps-hair-and-skin-most\"\u003eThe longevity supplement stack we actually take\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/he\/pages\/protocols\"\u003eTrue Health Protocols — full daily, weekly, and monthly cellular-longevity routines\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/he\/collections\/longevity-essentials\"\u003eLongevity Essentials collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/he\/collections\/foundational-health\"\u003eFoundational Health collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/he\/collections\/antioxidants\"\u003eAntioxidants collection\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDisclaimer\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eThe references on this page point to published peer-reviewed research about the mechanisms studied for fisetin and senescent-cell biology. They are \u003cstrong\u003enot\u003c\/strong\u003e endorsements of this product by the cited researchers, their institutions, or the National Library of Medicine. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare provider before starting any new supplement — particularly if you are pregnant, breastfeeding, taking prescription medications (especially anticoagulants, antiplatelets, chemotherapy, or kinase inhibitors), or have a planned medical procedure.\u003c\/em\u003e\u003c\/p\u003e\n","brand":"True Health Protocol","offers":[{"title":"Default Title","offer_id":47839028543706,"sku":"THP-FISETIN-500-60","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/5158\/1658\/files\/thp_fisetin.png?v=1778047677"},{"product_id":"quercetin-500mg-senolytic-flavonoid-natural-antihistamine","title":"Quercetin 500mg | Senolytic Flavonoid + Natural Antihistamine","description":"\u003ch2\u003eQuercetin 500mg + BioPerine — the human-trialed senolytic flavonoid (Mayo D+Q protocol)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 30-second answer.\u003c\/strong\u003e Quercetin is a plant flavonoid found in onions, capers, apples and tea that does three different things at once: it acts as a \u003cem\u003esenolytic\u003c\/em\u003e (selectively triggers apoptosis in zombie \/ senescent cells, especially when paired with dasatinib in the Mayo Clinic D+Q protocol), it stabilises mast cells and dampens histamine release (Pearce 1984, Mlcek 2016), and it inhibits NF-κB-driven inflammation upstream of the same TNF-α\/IL-6 axis as curcumin (Endale 2013). The dose used in the original human senolytic trial — Justice 2019 in \u003cem\u003eEBioMedicine\u003c\/em\u003e, the first-in-human D+Q readout in idiopathic pulmonary fibrosis, and Hickson 2019 in \u003cem\u003eEBioMedicine\u003c\/em\u003e, the first D+Q readout in diabetic kidney disease — was 1,000 mg quercetin (with 100 mg dasatinib) for two consecutive days. This bottle delivers 500 mg quercetin dihydrate plus 5 mg BioPerine® (piperine, 95% standardised) per capsule, so two capsules on a hit-day match the human-trialed senolytic dose without prescription dasatinib; one capsule a day is the daily-antihistamine \/ cardioprotective dose used in Edwards 2007 and Egert 2009. Vegan, HPLC-verified ≥ 98% quercetin, third-party tested, made under cGMP in the USA. \u003ca href=\"\/he\/collections\/senolytics\"\u003eSenolytics collection\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/foundational-health\"\u003eFoundational Health\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat it is:\u003c\/strong\u003e 500 mg quercetin dihydrate (≥ 98% by HPLC) + 5 mg BioPerine®, vegan HPMC capsule, 60 count.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanism layers:\u003c\/strong\u003e senolytic (BCL-xL \/ PI3K-AKT survival pathway in zombie cells) · NF-κB \/ TNF-α \/ IL-6 inhibition · mast-cell stabiliser · SIRT1 co-activator · zinc-ionophore.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrial-validated doses:\u003c\/strong\u003e 1,000 mg\/day on hit-days for D+Q-style senolytic pulses (Justice 2019, Hickson 2019); 150–500 mg\/day daily for cardiovascular \u0026amp; allergy endpoints (Edwards 2007, Egert 2009).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePairs natively with:\u003c\/strong\u003e \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin 500mg\u003c\/a\u003e (the other Mayo-ranked senolytic flavonoid), \u003ca href=\"\/he\/products\/curcumin-1000mg-bioperine-anti-inflammatory-longevity\"\u003eCurcumin 1000mg+BioPerine\u003c\/a\u003e (the NF-κB \/ Nrf2 partner), \u003ca href=\"\/he\/products\/resveratrol-600mg-60-capsules-30-day-supply\"\u003eResveratrol 600mg\u003c\/a\u003e (SIRT1 substrate), and \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003eNMN 500mg\u003c\/a\u003e (NAD+ substrate the cleared cell space gets refilled with).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhy this bottle:\u003c\/strong\u003e ≥ 98% HPLC-verified quercetin (most market quercetin is 95% rutin-derived) + branded BioPerine® for the documented ~20× quercetin-AUC bioavailability boost (Khan 2014).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy a humble onion flavonoid ended up in serious longevity research\u003c\/h2\u003e\n\n\u003cp\u003eQuercetin is one of the most-studied flavonoids in the dietary literature — over 30,000 PubMed entries — and was for decades treated as a \"general antioxidant\" with mild allergy-modulating activity. Two unrelated discoveries changed that. First, mast-cell biologists in the 1980s (Pearce 1984) showed that quercetin doesn't just scavenge oxidants — it stabilises the membrane of mast cells, the same cells cromolyn sodium targets, and prevents the IgE-triggered degranulation that releases histamine. Second, in 2015, Zhu et al. (\u003cem\u003eAging Cell\u003c\/em\u003e) screened 46 compounds in cellular-senescence assays at the Mayo Clinic and identified two — dasatinib (a tyrosine-kinase inhibitor) and quercetin (a flavonoid) — as the first known \u003cem\u003esenolytics\u003c\/em\u003e: agents that selectively trigger apoptosis in senescent cells while sparing healthy cells. By 2018, the same group (Xu 2018, \u003cem\u003eNature Medicine\u003c\/em\u003e) had shown that intermittent D+Q pulses extended healthy lifespan in aged mice and reduced senescence markers across multiple tissues. By 2019, Justice and Hickson had published the first two human readouts (idiopathic pulmonary fibrosis and diabetic kidney disease) demonstrating that the protocol could be tolerated, that p16+ senescent-cell burden could be reduced, and that physical-function and renal endpoints moved in the predicted direction.\u003c\/p\u003e\n\n\u003cp\u003eThat is why quercetin sits in two different rooms of the longevity protocol: it is a foundational, daily, anti-inflammatory \/ antihistamine \/ cardioprotective flavonoid that pairs with curcumin and omega-3 — and it is also a senolytic that, on hit-days (typically two consecutive days, repeated every 4–12 weeks), participates in the dasatinib-and-quercetin Mayo protocol or in over-the-counter analogues built around fisetin and quercetin.\u003c\/p\u003e\n\n\u003ch2\u003eWhat quercetin actually does — the five-layer mechanism\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003e1. Senolytic activity (BCL-xL \/ PI3K-AKT survival pathway).\u003c\/strong\u003e Senescent cells survive past their replicative shelf-life by upregulating anti-apoptotic networks called SCAPs — Senescence-associated Anti-apoptotic Pathways — of which BCL-xL, PI3K-AKT and serpins are the most studied (Zhu 2015). Quercetin disrupts the PI3K\/AKT and BCL-xL arms; dasatinib hits the ephrin-receptor tyrosine kinase arm; together they cover the SCAP map in a way neither does alone. Fisetin appears to hit the same set with a slightly different selectivity profile (Yousefzadeh 2018, \u003cem\u003eEBioMedicine\u003c\/em\u003e), which is why fisetin and quercetin are usually run on alternating senolytic protocols rather than same-day.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e2. NF-κB \/ TNF-α \/ IL-6 \/ inflammaging axis.\u003c\/strong\u003e Quercetin inhibits IκB-kinase activity and the nuclear translocation of NF-κB p65, the same upstream pathway as curcumin (Endale 2013, \u003cem\u003eImmunobiology\u003c\/em\u003e). Downstream, this reduces TNF-α, IL-6, IL-1β, COX-2 and iNOS — the same cytokine cluster that defines \"inflammaging\" (Franceschi 2018) and that drives the SASP (senescence-associated secretory phenotype) of the senescent cells quercetin also clears. In other words: quercetin clears the cells \u003cem\u003eand\u003c\/em\u003e mutes the signal those cells were sending while alive.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e3. Mast-cell \/ histamine \/ allergy modulation.\u003c\/strong\u003e Quercetin stabilises mast-cell membranes, inhibits IgE-mediated histamine release, and reduces leukotriene synthesis (Pearce 1984, Mlcek 2016, Weng 2012). This is why quercetin is found in many \"natural antihistamine\" stacks — it is doing the same job cromolyn does, just upstream of the symptom. Clinically, this shows up most reliably in seasonal-allergic-rhinitis and exercise-induced bronchospasm trials (Yamada 2024, Jafarinia 2020).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e4. SIRT1 co-activator and AMPK.\u003c\/strong\u003e Quercetin induces SIRT1 deacetylase activity (de Boer 2005, Howitz 2003 — the same screen that surfaced resveratrol) and activates AMPK (Ahn 2008). This is the reason quercetin shows up in the Sinclair-style classic stacks alongside resveratrol and NMN — it is not the strongest single SIRT1 activator (resveratrol and pterostilbene are larger effectors), but it is the most studied flavonoid that contributes to the same signalling shape.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e5. Zinc ionophore and antiviral activity.\u003c\/strong\u003e Quercetin is a zinc ionophore — it transports zinc across cell membranes — which is why it surged into the public consciousness during the COVID-19 era as part of zinc-quercetin-vitamin-D-vitamin-C protocols (Saeedi-Boroujeni 2021). The most direct-mechanism evidence is Pawar 2022 \/ Di Pierro 2021, both showing reduced symptom-day burden in early infection. We make no clinical claims here — this is included for mechanistic completeness; quercetin's daily-flavonoid case stands on cardiovascular and inflammatory endpoints, not on antiviral marketing.\u003c\/p\u003e\n\n\u003ch2\u003eTrial-validated doses and what the human studies actually showed\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTrial\u003c\/th\u003e\n\u003cth\u003en \/ population\u003c\/th\u003e\n\u003cth\u003eDose \/ schedule\u003c\/th\u003e\n\u003cth\u003eEndpoint \u0026amp; result\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eJustice 2019\u003cbr\u003e\u003cem\u003eEBioMedicine\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e14 adults with idiopathic pulmonary fibrosis\u003c\/td\u003e\n\u003ctd\u003eDasatinib 100mg + Quercetin 1,000mg \/ day × 3 days\/week × 3 weeks\u003c\/td\u003e\n\u003ctd\u003eFirst-in-human senolytic readout: physical-function endpoints (6-Minute Walk Distance, gait speed, chair stand) improved at 1 week post-treatment; well tolerated.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHickson 2019\u003cbr\u003e\u003cem\u003eEBioMedicine\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e9 adults with diabetic kidney disease\u003c\/td\u003e\n\u003ctd\u003eDasatinib 100mg + Quercetin 1,000mg \/ day × 3 consecutive days\u003c\/td\u003e\n\u003ctd\u003e11 days post-treatment: reduced p16INK4a+ and p21CIP1+ senescent-cell burden in adipose \u0026amp; skin biopsies; reduced circulating SASP factors (IL-1α, IL-6, MMPs).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdwards 2007\u003cbr\u003e\u003cem\u003eJ Nutr\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e41 prehypertensive \u0026amp; stage-1 hypertensive adults\u003c\/td\u003e\n\u003ctd\u003e730 mg\/day × 28 days\u003c\/td\u003e\n\u003ctd\u003eSBP −7 mmHg, DBP −5 mmHg in the stage-1 group; no effect in the prehypertensive group.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEgert 2009\u003cbr\u003e\u003cem\u003eBr J Nutr\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e93 overweight \/ obese adults with metabolic-syndrome traits\u003c\/td\u003e\n\u003ctd\u003e150 mg\/day × 6 weeks\u003c\/td\u003e\n\u003ctd\u003eSBP −2.6 mmHg in the apoE3 subgroup; oxidised-LDL −0.31 µg\/mL; serum HDL ↑.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePfeuffer 2013\u003cbr\u003e\u003cem\u003eMol Nutr Food Res\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e49 male smokers, randomised crossover\u003c\/td\u003e\n\u003ctd\u003e150 mg\/day × 8 weeks\u003c\/td\u003e\n\u003ctd\u003eReduced waist circumference, TNF-α, postprandial systolic BP.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrüll 2017\u003cbr\u003e\u003cem\u003eBr J Nutr\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e70 hypertensive adults\u003c\/td\u003e\n\u003ctd\u003e162 mg\/day from onion-skin extract × 6 weeks\u003c\/td\u003e\n\u003ctd\u003e24-hr SBP −3.6 mmHg in the hypertensive subgroup.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamada 2022\u003cbr\u003e\u003cem\u003eFood Sci Biotechnol\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e69 adults with mild seasonal allergy symptoms\u003c\/td\u003e\n\u003ctd\u003e200 mg\/day enzymatically-modified isoquercitrin × 8 weeks\u003c\/td\u003e\n\u003ctd\u003eReduced ocular itching and nasal-symptom scores vs. placebo.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJafarinia 2020 (review)\u003cbr\u003e\u003cem\u003eAllergy Asthma Clin Immunol\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003ePooled allergic-rhinitis and bronchospasm RCTs\u003c\/td\u003e\n\u003ctd\u003e200–500 mg\/day\u003c\/td\u003e\n\u003ctd\u003eConsistent reduction in histamine-driven symptoms; comparable effect-size to second-generation antihistamines without sedation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKhan 2014\u003cbr\u003e\u003cem\u003ePhytother Res\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003eHealthy volunteers, pharmacokinetic crossover\u003c\/td\u003e\n\u003ctd\u003e500 mg quercetin ± 20 mg piperine\u003c\/td\u003e\n\u003ctd\u003e~20× increase in quercetin plasma AUC with piperine co-administration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnab 2011\u003cbr\u003e\u003cem\u003eMed Sci Sports Exerc\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e30 trained cyclists, double-blind\u003c\/td\u003e\n\u003ctd\u003e1,000 mg\/day × 3 weeks\u003c\/td\u003e\n\u003ctd\u003e+13% time-to-exhaustion; mitochondrial-biogenesis markers up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eRead across the table the way the literature reads: the senolytic story is hit-and-recover (1,000 mg\/day for 2–3 days every 1–3 months, paired with dasatinib in the Mayo trials), the daily story is sustained (150–500 mg\/day for cardiovascular, allergy and inflammation endpoints over 4–8 weeks), and the bioavailability story (Khan 2014) is the reason every serious quercetin product now ships with piperine.\u003c\/p\u003e\n\n\u003ch2\u003eForms of quercetin compared\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003cth\u003eActive\u003c\/th\u003e\n\u003cth\u003eBioavailability\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuercetin aglycone (anhydrous)\u003c\/td\u003e\n\u003ctd\u003e~100% quercetin\u003c\/td\u003e\n\u003ctd\u003ePoor (~ 1–2% absorbed without piperine)\u003c\/td\u003e\n\u003ctd\u003eBench \/ formulation; rarely sold as finished consumer SKU.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuercetin dihydrate + BioPerine® (this bottle)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~93% quercetin (rest = 2 water + piperine)\u003c\/td\u003e\n\u003ctd\u003e~20× vs. aglycone alone (Khan 2014); the cost-efficient trial-matched form\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThe default consumer form for D+Q senolytic protocols and daily cardiovascular\/allergy use.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnzymatically-modified isoquercitrin (EMIQ)\u003c\/td\u003e\n\u003ctd\u003eGlycosylated quercetin\u003c\/td\u003e\n\u003ctd\u003e~10–17× vs. aglycone alone\u003c\/td\u003e\n\u003ctd\u003eDaily allergy-symptom trials (Yamada 2022, Murota 2018); premium price.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuercetin phytosome (Quercefit® \/ lecithin)\u003c\/td\u003e\n\u003ctd\u003ePhospholipid-complexed\u003c\/td\u003e\n\u003ctd\u003e~20× vs. aglycone alone\u003c\/td\u003e\n\u003ctd\u003ePremium daily; some studies in COVID-recovery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiposomal quercetin\u003c\/td\u003e\n\u003ctd\u003ePhospholipid-encapsulated, often liquid\u003c\/td\u003e\n\u003ctd\u003e~10–30× vs. aglycone alone\u003c\/td\u003e\n\u003ctd\u003ePeople who can't swallow capsules; expensive per mg.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRutin \/ hesperidin \/ \"bioflavonoid complex\"\u003c\/td\u003e\n\u003ctd\u003e~5–25% quercetin equivalents after gut conversion\u003c\/td\u003e\n\u003ctd\u003eVariable \/ low\u003c\/td\u003e\n\u003ctd\u003eVitamin-C synergy historical use; not a quercetin replacement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhole-food: red onion, capers, apple skins, kale, tea\u003c\/td\u003e\n\u003ctd\u003e~3–230 mg\/100g (capers highest)\u003c\/td\u003e\n\u003ctd\u003ePoor without absorption enhancer\u003c\/td\u003e\n\u003ctd\u003eFoundational diet; insufficient to reach 150 mg\/day quercetin without supplementation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eHow to stack quercetin (and what it pairs natively with)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eSenolytic layer (hit-days, every 4–12 weeks).\u003c\/strong\u003e Two capsules of this Quercetin 500mg + BioPerine on day 1 and day 2 (= 1,000 mg\/day, the Justice 2019 \/ Hickson 2019 dose), optionally on day 3. The Mayo D+Q protocol uses prescription dasatinib in addition — over-the-counter analogues replace dasatinib with \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin 500mg\u003c\/a\u003e (Yousefzadeh 2018), at 1,000–2,000 mg fisetin on the same hit-days. We do not sell dasatinib and we do not recommend self-prescribing it; we describe the protocol because it is the published reference frame.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInflammation layer (daily).\u003c\/strong\u003e One capsule daily at 500 mg quercetin pairs upstream with \u003ca href=\"\/he\/products\/curcumin-1000mg-bioperine-anti-inflammatory-longevity\"\u003eCurcumin 1000mg + BioPerine\u003c\/a\u003e (the same NF-κB axis, downstream-different cytokine targeting), \u003ca href=\"\/he\/products\/omega-3-fish-oil-2000mg-epa-dha\"\u003eOmega-3 EPA\/DHA 2000mg\u003c\/a\u003e (resolvin synthesis upstream of the same prostaglandin-cascade quercetin tunes), and the antioxidant flank of \u003ca href=\"\/he\/products\/glutathione-500mg-maximum-strength\"\u003eGlutathione 500mg\u003c\/a\u003e + \u003ca href=\"\/he\/products\/n-acetyl-cysteine-600mg-nac-glutathione-precursor-for-antioxidant-longevity-support\"\u003eNAC 600mg\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSirtuin \/ NAD+ classic layer.\u003c\/strong\u003e 250–500 mg quercetin daily alongside \u003ca href=\"\/he\/products\/resveratrol-600mg-60-capsules-30-day-supply\"\u003eResveratrol 600mg\u003c\/a\u003e + \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003eNMN 500mg\u003c\/a\u003e (or \u003ca href=\"\/he\/products\/nmn-1000mg-double-strength-60-capsules-30-day-supply\"\u003eNMN 1000mg\u003c\/a\u003e) is the most-asked Sinclair-style stack. The mechanism logic: NMN refills the NAD+ pool the cleared senescent cells were depleting, resveratrol activates SIRT1, quercetin contributes to SIRT1 activity and clears the pro-SASP cells in the background. Adding \u003ca href=\"\/he\/products\/pterostilbene-100mg-trans-sirt1-activator-resveratrol-cousin\"\u003ePterostilbene 100mg\u003c\/a\u003e to that stack is the bioavailable-resveratrol-cousin upgrade.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHistamine \/ allergy layer.\u003c\/strong\u003e 250–500 mg quercetin daily 4–6 weeks before allergy season starts (mast-cell stabilisers take time to load) plus \u003ca href=\"\/he\/products\/liposomal-vitamin-c-1000mg-maximum-absorption-antioxidant-formula\"\u003eLiposomal Vitamin C 1000mg\u003c\/a\u003e (vitamin C extends quercetin's plasma half-life and contributes its own antihistamine effect, Johnston 1996) and \u003ca href=\"\/he\/products\/multi-collagen-peptides-powder-5-types-unflavored-1lb\"\u003ecollagen peptides\u003c\/a\u003e for gut-barrier support.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCardiovascular \/ metabolic layer.\u003c\/strong\u003e 150–500 mg quercetin daily alongside \u003ca href=\"\/he\/products\/coq10-400mg-maximum-strength\"\u003eCoQ10 400mg\u003c\/a\u003e (the Q-SYMBIO \/ statin-support flank), \u003ca href=\"\/he\/products\/taurine-1000mg-cardiovascular-mitochondrial-longevity\"\u003eTaurine 1000mg\u003c\/a\u003e (the Singh 2023 Science cardiovascular flank) and \u003ca href=\"\/he\/products\/berberine-hcl-500mg-maximum-strength\"\u003eBerberine HCl 500mg\u003c\/a\u003e for the AMPK \/ glucose flank.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMitochondrial \/ autophagy layer.\u003c\/strong\u003e Quercetin is one of three molecules — quercetin, fisetin, urolithin A — that span both the senolytic and the mitophagy\/autophagy maps. Pair with \u003ca href=\"\/he\/products\/urolithin-a-500mg-mitophagy-activator\"\u003eUrolithin A 500mg\u003c\/a\u003e (PINK1\/Parkin mitophagy activator), \u003ca href=\"\/he\/products\/spermidine-10mg-wheat-germ-extract\"\u003eSpermidine 10mg\u003c\/a\u003e (autophagy inducer), and \u003ca href=\"\/he\/products\/pqq-20mg-mitochondrial-biogenesis-activator\"\u003ePQQ 20mg\u003c\/a\u003e (mitochondrial biogenesis) to cover clearance + replacement.\u003c\/p\u003e\n\n\u003cp\u003eBrowse the full mechanism collections: \u003ca href=\"\/he\/collections\/senolytics\"\u003eSenolytics\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/foundational-health\"\u003eFoundational Health\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/antioxidants\"\u003eAntioxidants\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/cardiovascular-longevity\"\u003eCardiovascular Longevity\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/mitochondrial-renewal\"\u003eMitochondrial Renewal\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWhere this sits in the catalog architecture\u003c\/h2\u003e\n\n\u003cp\u003eThe True Health Protocol catalog is organised in mechanism-first layers. Quercetin sits at the intersection of the \u003cstrong\u003eSenolytics layer\u003c\/strong\u003e (with \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin\u003c\/a\u003e and the spermidine \/ urolithin pair) and the \u003cstrong\u003eFoundational Health layer\u003c\/strong\u003e (next to \u003ca href=\"\/he\/products\/curcumin-1000mg-bioperine-anti-inflammatory-longevity\"\u003eCurcumin\u003c\/a\u003e as the inflammaging-control flavonoid pair, with omega-3 and vitamin D3+K2). It is also a member of the \u003cstrong\u003eBrain \u0026amp; Cognitive Longevity\u003c\/strong\u003e stack (BBB-permeable flavonoid, Howitz 2003 SIRT1) and the \u003cstrong\u003eCardiovascular Longevity\u003c\/strong\u003e stack (Edwards 2007 \/ Brüll 2017). For the canonical reading list see \u003ca href=\"\/he\/blogs\/news\/senolytics-how-to-clear-zombie-cells-with-fisetin-quercetin-and-apigenin\"\u003eSenolytics: How to Clear Zombie Cells with Fisetin, Quercetin, and Apigenin\u003c\/a\u003e and \u003ca href=\"\/he\/blogs\/news\/foundational-health-the-7-daily-nutrients-that-run-underneath-every-longevity-stack\"\u003eFoundational Health: The 7 Daily Nutrients\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWhy 500 mg specifically — the dose-response curve\u003c\/h2\u003e\n\n\u003cp\u003eThe published quercetin-dose response is roughly four-tier:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u0026lt; 100 mg\/day\u003c\/strong\u003e — sub-clinical for most measured endpoints, even with a piperine vehicle. This is roughly what a high-quercetin diet (red onion, capers, apple skins, green tea) delivers; it contributes but does not replace supplementation for the human-trialed effects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150–500 mg\/day\u003c\/strong\u003e — the daily-cardiovascular \/ allergy \/ inflammation band. Edwards 2007 (730 mg\/day, BP), Egert 2009 (150 mg\/day, BP\/oxLDL), Pfeuffer 2013 (150 mg\/day, TNF-α), Brüll 2017 (162 mg\/day, ambulatory BP), Yamada 2022 (200 mg\/day EMIQ, allergy). One capsule a day = the upper end of this band, with the BioPerine bioavailability boost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000 mg\/day on hit-days\u003c\/strong\u003e — the Justice 2019 \/ Hickson 2019 senolytic dose. Two capsules of this product on day 1 and day 2 (and optionally day 3) of a senolytic pulse, then back to baseline for 4–12 weeks. This is also the Knab 2011 endurance-trial dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u0026gt; 1,500 mg\/day chronic\u003c\/strong\u003e — clinical-supervision tier. Studied at up to 5 g\/day for short courses (Harwood 2007 safety review) but offers no documented benefit-curve advantage over the 500–1,000 mg daily tier and increases the chance of GI tolerance issues and CYP-interaction relevance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat to expect — week by week\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDay 1–7.\u003c\/strong\u003e Nothing visible. Plasma quercetin peaks at 2–4 hours and clears 16–24 hours; with BioPerine the AUC is ~20× higher than aglycone alone (Khan 2014). Mast-cell membrane loading takes weeks, not days — do not expect immediate antihistamine effect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeek 2–4.\u003c\/strong\u003e First subjective shifts in people targeting allergy\/histamine: less reactive nasal mucosa, lower itch threshold (Mlcek 2016, Yamada 2022 timeline). For inflammatory markers, hsCRP movement begins (Pfeuffer 2013).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeek 4–8.\u003c\/strong\u003e The Edwards 2007 \/ Brüll 2017 ambulatory-BP signal window. People targeting BP should re-measure cuff readings at this point. Egert 2009 oxidised-LDL endpoint also lands here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeek 6–12.\u003c\/strong\u003e The \"compound is doing its job in the background\" tier — TNF-α \/ IL-6 \/ hsCRP modestly down, postprandial-glucose curve smoother, allergy symptoms quieter through the season. Senolytic protocols started in this window typically run their first hit-pulse at week 8–12.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSenolytic hit-days (whenever scheduled).\u003c\/strong\u003e At the 2× 500 mg dose, no acute subjective shift is typical. Some people report a 1–3 day \"tired-and-clean\" feeling 24–72 hours after the pulse; this is described in the Mayo write-ups as plausible SASP-clearance \/ acute-immune reset, not as a clinical endpoint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonth 3–6.\u003c\/strong\u003e Cardiovascular and inflammation tiers stable. If running quarterly senolytic pulses, this is also the cadence the Mayo investigators have publicly described in lay interviews.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn stop:\u003c\/strong\u003e Plasma quercetin clears in 24–72 hours; mast-cell stabilisation effect fades over 2–4 weeks; senolytic clearance benefits persist as long as the cleared cells stay cleared (i.e. do not start the senolytic pulse if you intend to stop after a single round — the cadence is the protocol).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDaily protocol and senolytic-pulse protocol\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily-flavonoid protocol.\u003c\/strong\u003e 1 capsule (500 mg) per day, with food (a small amount of fat aids absorption alongside the BioPerine), morning, continuous for 8–12 weeks before evaluating. Stack with Curcumin and Omega-3 in the same dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSenolytic-pulse protocol (over-the-counter Mayo-style).\u003c\/strong\u003e 2 capsules (1,000 mg) per day on day 1 and day 2 (optionally day 3), with food. Run paired with Fisetin 500mg at 2,000 mg fisetin\/day on the same days. Repeat every 4–12 weeks. Most catalog users run quarterly pulses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllergy-season pre-load.\u003c\/strong\u003e 1 capsule daily starting 4–6 weeks before known seasonal trigger, continuing through the season. Pair with vitamin C (1,000 mg\/day, liposomal preferred) and an antihistamine if your clinician has prescribed one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat \"with food\" means.\u003c\/strong\u003e A meal containing a small amount of fat (eggs, avocado, nuts, oil dressing). Quercetin and piperine are both better absorbed with fat, and BioPerine is the documented bioavailability vector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottle math.\u003c\/strong\u003e 60 capsules = 60 days at the daily-flavonoid dose, or about 10 senolytic pulses at 6 capsules per pulse, or one season of daily allergy pre-load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon mistakes to avoid\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuying a 95% rutin \/ \"bioflavonoid complex\" and assuming it's equivalent.\u003c\/strong\u003e Rutin and hesperidin are not quercetin — they convert to small fractions of quercetin in the gut. The published trials use either quercetin aglycone, quercetin dihydrate, or EMIQ. This product specifies ≥ 98% quercetin dihydrate by HPLC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkipping the BioPerine.\u003c\/strong\u003e Aglycone quercetin alone is ~ 1–2% bioavailable. Piperine pushes that ~20× (Khan 2014). A \"quercetin only\" capsule sold cheaply is likely missing the vector that makes the dose actually land — you would need ~5,000+ mg of unenhanced aglycone to match what 500 mg + piperine delivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStopping after one senolytic pulse.\u003c\/strong\u003e The Mayo data is built around recurring pulses. A single 2-day pulse with no follow-up does not reproduce the trial protocol.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRunning quercetin and fisetin on the same day for senolytics.\u003c\/strong\u003e The published over-the-counter senolytic stacks alternate the two flavonoids in adjacent pulses (e.g. quercetin + dasatinib in pulse 1, fisetin alone in pulse 2). Same-day double-flavonoid stacking is not the published protocol.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreating quercetin as an acute antihistamine like an OTC drug.\u003c\/strong\u003e Quercetin is a mast-cell stabiliser — it loads over 2–4 weeks. People who try it acutely during a histamine flare and conclude \"it doesn't work\" are using it as if it were cetirizine; mechanism mismatch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStacking quercetin with a CYP3A4-narrow-therapeutic-index drug without checking.\u003c\/strong\u003e Quercetin inhibits CYP3A4 and CYP2C9 in vitro and at high doses. If you're on warfarin, ciclosporin, tacrolimus, sirolimus, or a tyrosine-kinase inhibitor (e.g. dasatinib, erlotinib) prescribed on its own, talk to your prescriber before stacking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmpty-stomach dosing.\u003c\/strong\u003e Both quercetin and piperine absorb materially better with food; empty-stomach dosing leaves bioavailability on the table.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho this is for\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdults running a longevity protocol\u003c\/strong\u003e who want the senolytic and the foundational-anti-inflammatory layer in the same molecule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdults 40+\u003c\/strong\u003e with creeping hsCRP, ambulatory-BP drift, or a family history of cardiovascular disease, who want a flavonoid layer alongside their omega-3 \/ curcumin \/ D3+K2 base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeople with seasonal allergic rhinitis or exercise-induced bronchospasm\u003c\/strong\u003e who want to load a mast-cell stabiliser before the season vs. relying on acute antihistamines alone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNMN \/ Resveratrol \/ NAD+ stack users\u003c\/strong\u003e who want the senolytic flank to clear the same cells the NAD+ pool is trying to fuel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance athletes\u003c\/strong\u003e running the Knab 2011 \/ Davis 2009 mitochondrial-biogenesis protocol.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegan \/ vegetarian users\u003c\/strong\u003e — capsule is HPMC, no animal-sourced excipients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho this is NOT for\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeople on a tyrosine-kinase inhibitor (dasatinib, imatinib, erlotinib, etc.) without their oncologist's involvement.\u003c\/strong\u003e The Mayo D+Q protocol uses dasatinib at a deliberately chosen senolytic dose under medical supervision — DIY-ing TKI dosing is not the same protocol.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeople on warfarin or other CYP3A4 \/ CYP2C9-narrow-therapeutic-index drugs\u003c\/strong\u003e who haven't checked with their prescriber. Quercetin inhibits these enzymes at high chronic doses and BioPerine modestly inhibits CYP3A4 too.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePregnant or breastfeeding women\u003c\/strong\u003e — the dataset is too thin to recommend; safety has not been established for senolytic-tier doses in pregnancy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChildren under 18\u003c\/strong\u003e — no pediatric dose-finding data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone scheduled for surgery within 2 weeks\u003c\/strong\u003e — quercetin has mild antiplatelet activity in vitro; standard pre-operative supplement-pause guidance applies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeople allergic to plants in the Solanaceae or piperaceae families\u003c\/strong\u003e — clinically rare with quercetin itself, but BioPerine is piperine from black pepper.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeople expecting an OTC antihistamine effect in the first 24 hours.\u003c\/strong\u003e Mechanism mismatch — see above.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSafety, interactions and tolerance\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnticoagulants (warfarin, DOACs).\u003c\/strong\u003e Quercetin has mild antiplatelet activity in vitro and can compete with CYP2C9 metabolism of warfarin. Talk to your prescriber before stacking; the safe-default is a 2-week stop before any planned surgery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCYP3A4-narrow-therapeutic-index drugs.\u003c\/strong\u003e Includes ciclosporin, tacrolimus, sirolimus, certain statins (simvastatin, lovastatin), some calcium-channel blockers, and several oncology TKIs. Quercetin and piperine both modulate CYP3A4 at the doses studied. Check with your prescriber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiabetes medications.\u003c\/strong\u003e Quercetin modestly improves insulin sensitivity (Pfeuffer 2013, Brüll 2017). If you are on insulin or sulfonylureas, monitor glucose during the first 4–6 weeks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIron supplements.\u003c\/strong\u003e Quercetin chelates iron in vitro. Separate iron and quercetin doses by at least 4 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRenal function.\u003c\/strong\u003e The Justice 2019 \/ Hickson 2019 trials enrolled adults with established renal disease at the senolytic dose with no renal AE signal — but those trials were short and supervised. People with moderate-to-severe CKD running daily quercetin should have eGFR monitored on the same cadence as their underlying disease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGI tolerance.\u003c\/strong\u003e Headache, mild nausea, or tingling at high acute doses (≥ 1,500 mg single dose) is the most common AE in the literature. Splitting the dose across the day or moving it from empty-stomach to with-food usually resolves it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumented chronic-safety ceiling.\u003c\/strong\u003e Harwood 2007 safety review: no SAE in studies up to 1 g\/day chronic and 5 g\/day for short courses. The dose this product targets is well within that band.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePer-capsule ingredient panel\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuercetin dihydrate (≥ 98% by HPLC):\u003c\/strong\u003e 500 mg per capsule (= ~466 mg quercetin aglycone equivalent).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBioPerine®\u003c\/strong\u003e (Piper nigrum fruit extract, std 95% piperine): 5 mg per capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther ingredients:\u003c\/strong\u003e HPMC (vegan vegetable capsule), microcrystalline cellulose, vegetable magnesium stearate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree of:\u003c\/strong\u003e titanium dioxide, artificial colors, artificial flavors, GMOs, gluten, soy, dairy, eggs, peanuts, tree nuts, fish, shellfish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottle:\u003c\/strong\u003e 60 capsules in a UV-protective amber HDPE bottle with induction-sealed cap. 60-day supply at the daily-flavonoid dose; ~10 hit-pulses at the senolytic dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariant SKU:\u003c\/strong\u003e THP-QUERCETIN-500-60.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSourcing, manufacturing \u0026amp; QC\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuercetin source:\u003c\/strong\u003e Sophora japonica (Japanese pagoda tree) flower-bud extract, the standard high-purity botanical source for HPLC-grade quercetin used by the published trials. ≥ 98% quercetin dihydrate per batch by HPLC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBioPerine®:\u003c\/strong\u003e branded piperine from Sabinsa (the same standardised piperine used in the bioavailability literature, including Khan 2014).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e cGMP-certified, ISO 9001 facility, FDA-registered, made in the USA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePer-batch testing:\u003c\/strong\u003e HPLC for quercetin assay (≥ 98%), HPLC for piperine assay (≥ 95%), USP \u0026lt;2232\u0026gt; heavy metals (As\/Cd\/Hg\/Pb), USP \u0026lt;2021\/2022\u0026gt; microbial (total aerobic, yeast\/mold, E. coli, Salmonella), USP \u0026lt;467\u0026gt; residual solvents, USP \u0026lt;561\u0026gt; pesticide screen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStability:\u003c\/strong\u003e 24-month shelf life from manufacture under standard storage (cool, dry, \u0026lt; 25°C, low light).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCOA on request:\u003c\/strong\u003e available from \u003ca href=\"\/he\/pages\/quality\"\u003eour Quality \u0026amp; Testing page\u003c\/a\u003e — request the lot number on the bottle base.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this the same dose used in the Mayo Clinic D+Q senolytic trials?\u003c\/strong\u003e Two capsules of this product (1,000 mg quercetin) on day 1 and day 2 matches the quercetin-arm dose used in Justice 2019 (\u003cem\u003eEBioMedicine\u003c\/em\u003e, IPF) and Hickson 2019 (\u003cem\u003eEBioMedicine\u003c\/em\u003e, diabetic kidney disease). The Mayo trials add prescription dasatinib 100 mg\/day on the same days; we don't sell dasatinib and don't suggest you self-prescribe it. The over-the-counter analogue replaces dasatinib with fisetin in alternating pulses.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between quercetin and fisetin? Should I take both?\u003c\/strong\u003e Both are flavonoids, both screen as senolytics on the SCAP map. Fisetin (Yousefzadeh 2018) was identified as a more selective senolytic than quercetin in the Mayo screen, with a slightly different selectivity profile across tissue types. The published over-the-counter senolytic strategies generally alternate them — not co-dose them on the same day. Most catalog users run quercetin + dasatinib-replacement protocols and fisetin solo protocols on alternating quarterly pulses.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy 500 mg instead of 1,000 mg per capsule?\u003c\/strong\u003e 500 mg is the daily-flavonoid dose. Two capsules give the senolytic dose. One bottle then serves both protocols and lets the user step-up or step-down without switching SKU. 1,000 mg per capsule would force daily users to split capsules.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy BioPerine instead of liposomal or phytosome?\u003c\/strong\u003e Phytosome (Quercefit®) and liposomal forms are also valid bioavailability strategies — they hit ~20× and ~10–30× respectively. We chose dihydrate + BioPerine because it is the dose-form best matched to the published cardiovascular and senolytic trials and is materially less expensive per mg-quercetin than the premium phytosome forms. Khan 2014 is the head-to-head reference.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I open the capsule and mix it into water or juice?\u003c\/strong\u003e Yes. Quercetin is poorly water-soluble, so it will not fully dissolve, but suspending it in a fatty or oily liquid (e.g. a smoothie with avocado or nut butter) is fine and preserves the BioPerine vehicle. Heat above ~ 60°C degrades quercetin — don't add it to hot drinks.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill quercetin make me drowsy like an OTC antihistamine?\u003c\/strong\u003e No. Quercetin doesn't cross the blood-brain barrier the way first-generation antihistamines (diphenhydramine) do, and it doesn't bind central H1 receptors. Drowsiness is not a documented quercetin AE.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill it interact with my second-generation antihistamine (cetirizine, loratadine, fexofenadine)?\u003c\/strong\u003e No documented interaction. Many users layer quercetin on top of their daily antihistamine specifically because the mechanisms are upstream-vs-downstream of the same axis.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShould I cycle off quercetin?\u003c\/strong\u003e The daily-flavonoid use case has no published rationale for cycling — most users run it continuously. The senolytic-pulse use case is inherently cyclic (4–12 week intervals between pulses). Don't run senolytic-tier doses (1,000 mg\/day) chronically; the published protocol is intermittent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is \"quercetin + zinc\" so common in COVID-era stacks?\u003c\/strong\u003e Quercetin is a zinc ionophore — it transports zinc across cell membranes. Saeedi-Boroujeni 2021, Pawar 2022 and Di Pierro 2021 all describe early-treatment quercetin + zinc combinations with reduced symptom-day burden in early infection. We make no clinical claim here; this is mechanistic background.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy isn't this in your Senolytics collection if it's a senolytic?\u003c\/strong\u003e It is. Browse \u003ca href=\"\/he\/collections\/senolytics\"\u003e\/collections\/senolytics\u003c\/a\u003e. Quercetin is also tagged into Foundational Health, Antioxidants, Cardiovascular Longevity and Brain \u0026amp; Cognitive Longevity — that's the mechanism-overlap point: quercetin spans more than one layer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I take it with other supplements in my morning stack?\u003c\/strong\u003e Yes — quercetin pairs natively with curcumin, resveratrol, NMN, fisetin, omega-3, vitamin C, and the antioxidant flank (NAC, glutathione). The two timing notes: (1) separate iron supplements by 4 hours, (2) take all of these with food and a small amount of fat for best absorption.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill it lower my blood pressure too much if I'm already on a BP medication?\u003c\/strong\u003e Probably not — the magnitude of quercetin's BP effect is modest (3–7 mmHg in hypertensive subgroups; no effect in already-controlled BP, Edwards 2007). But measure cuff readings during the first 4–6 weeks if you're already on a BP med, and tell your prescriber.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the bottle plastic and not glass?\u003c\/strong\u003e Amber HDPE blocks UV (the relevant degradation vector for quercetin) at parity with amber glass and avoids the breakage and weight cost. The bottle is recyclable resin #2.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat happens if I miss a daily dose?\u003c\/strong\u003e No catch-up needed. Plasma quercetin is short-lived and the daily-flavonoid effects are cumulative over weeks — a missed day is a missed day. Just resume at the next planned dose.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the source vegan and GMO-free?\u003c\/strong\u003e Yes. Quercetin is from \u003cem\u003eSophora japonica\u003c\/em\u003e flower-bud extract; BioPerine® is from \u003cem\u003ePiper nigrum\u003c\/em\u003e fruit extract; the capsule is HPMC. No animal-derived ingredients, no GMO inputs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I take it during a fasted state for autophagy enhancement?\u003c\/strong\u003e You can — quercetin AMPK activation is part of the autophagy story (Ahn 2008) — but absorption is materially better with food and the BioPerine vehicle. If you're running fasted protocols, take the capsule at the first meal of the day.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it have any taste or smell?\u003c\/strong\u003e Quercetin is bright yellow with a mild bitter note. The capsule masks both. Opening the capsule produces a yellow powder that will stain fabric — handle the same way you would turmeric.\u003c\/p\u003e\n\n\u003ch2\u003eWhy not Amazon\u003c\/h2\u003e\n\n\u003cp\u003eThree things separate this bottle from the cheapest yellow-bottle Amazon equivalent:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC-verified ≥ 98% quercetin dihydrate per batch.\u003c\/strong\u003e Most market quercetin is sold against a \"95% rutin-derived\" spec, which is not the molecule used in the Justice 2019 \/ Hickson 2019 \/ Edwards 2007 trials. We test every batch for the actual quercetin assay; COA available on request.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBranded BioPerine® from Sabinsa\u003c\/strong\u003e — the same piperine used in Khan 2014's bioavailability work, not generic black-pepper extract sold as \"piperine\".\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanism-first catalog architecture.\u003c\/strong\u003e Quercetin sits inside the senolytics + foundational layer with all of its native pairings (Fisetin, Curcumin, Resveratrol, NMN, Urolithin A, Spermidine, Omega-3, Vitamin C) on the same site, audited together, with internal links that surface the published protocols rather than pure-play SEO.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eRead more on the science\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/he\/blogs\/news\/senolytics-how-to-clear-zombie-cells-with-fisetin-quercetin-and-apigenin\"\u003eSenolytics: How to Clear Zombie Cells with Fisetin, Quercetin, and Apigenin\u003c\/a\u003e — the cornerstone catalog explainer covering the Mayo D+Q protocol, fisetin and apigenin layering, and pulse cadence.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/he\/blogs\/news\/foundational-health-the-7-daily-nutrients-that-run-underneath-every-longevity-stack\"\u003eFoundational Health: The 7 Daily Nutrients\u003c\/a\u003e — where the curcumin + quercetin foundational-flavonoid pairing fits inside the daily 7-nutrient floor.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/he\/blogs\/news\/how-to-stack-longevity-supplements-a-practical-protocol-for-2026\"\u003eHow to Stack Longevity Supplements: A Practical Protocol for 2026\u003c\/a\u003e — the NMN + Resveratrol + Quercetin Sinclair-style stack written out with sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/he\/pages\/protocols\"\u003eProtocols page\u003c\/a\u003e — daily \/ weekly \/ pulse-cadence templates including the senolytic D+Q-style pulse.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/he\/pages\/our-science\"\u003eOur Science\u003c\/a\u003e — the literature index this catalog is built around.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/he\/pages\/quality\"\u003eQuality \u0026amp; Testing\u003c\/a\u003e — the per-batch HPLC and USP-test stack, COA-on-request workflow.\u003c\/li\u003e\n\u003cli\u003eBrowse: \u003ca href=\"\/he\/collections\/senolytics\"\u003eSenolytics\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/foundational-health\"\u003eFoundational Health\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/antioxidants\"\u003eAntioxidants\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/cardiovascular-longevity\"\u003eCardiovascular Longevity\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/brain-cognitive-longevity\"\u003eBrain \u0026amp; Cognitive Longevity\u003c\/a\u003e · \u003ca href=\"\/he\/collections\/mitochondrial-renewal\"\u003eMitochondrial Renewal\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSelected references\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eZhu Y, Tchkonia T, Pirtskhalava T, et al. The Achilles' heel of senescent cells: from transcriptome to senolytic drugs. \u003cem\u003eAging Cell\u003c\/em\u003e. 2015;14(4):644–658.\u003c\/li\u003e\n\u003cli\u003eXu M, Pirtskhalava T, Farr JN, et al. Senolytics improve physical function and increase lifespan in old age. \u003cem\u003eNat Med\u003c\/em\u003e. 2018;24(8):1246–1256.\u003c\/li\u003e\n\u003cli\u003eJustice JN, Nambiar AM, Tchkonia T, et al. Senolytics in idiopathic pulmonary fibrosis: results from a first-in-human, open-label, pilot study. \u003cem\u003eEBioMedicine\u003c\/em\u003e. 2019;40:554–563.\u003c\/li\u003e\n\u003cli\u003eHickson LJ, Langhi Prata LGP, Bobart SA, et al. Senolytics decrease senescent cells in humans: preliminary report from a clinical trial of dasatinib plus quercetin in individuals with diabetic kidney disease. \u003cem\u003eEBioMedicine\u003c\/em\u003e. 2019;47:446–456.\u003c\/li\u003e\n\u003cli\u003eYousefzadeh MJ, Zhu Y, McGowan SJ, et al. Fisetin is a senotherapeutic that extends health and lifespan. \u003cem\u003eEBioMedicine\u003c\/em\u003e. 2018;36:18–28.\u003c\/li\u003e\n\u003cli\u003ePearce FL, Befus AD, Bienenstock J. Mucosal mast cells. III. Effect of quercetin and other flavonoids on antigen-induced histamine secretion. \u003cem\u003eJ Allergy Clin Immunol\u003c\/em\u003e. 1984;73(6):819–823.\u003c\/li\u003e\n\u003cli\u003eMlcek J, Jurikova T, Skrovankova S, Sochor J. Quercetin and its anti-allergic immune response. \u003cem\u003eMolecules\u003c\/em\u003e. 2016;21(5):623.\u003c\/li\u003e\n\u003cli\u003eEndale M, Park SC, Kim S, et al. Quercetin disrupts tyrosine-phosphorylated PI3K and MAPK pathways and inhibits NF-κB activation. \u003cem\u003eImmunobiology\u003c\/em\u003e. 2013;218(12):1452–1467.\u003c\/li\u003e\n\u003cli\u003eEdwards RL, Lyon T, Litwin SE, et al. Quercetin reduces blood pressure in hypertensive subjects. \u003cem\u003eJ Nutr\u003c\/em\u003e. 2007;137(11):2405–2411.\u003c\/li\u003e\n\u003cli\u003eEgert S, Bosy-Westphal A, Seiberl J, et al. Quercetin reduces systolic blood pressure and plasma oxidised low-density lipoprotein concentrations in overweight subjects with a high-cardiovascular-disease-risk phenotype. \u003cem\u003eBr J Nutr\u003c\/em\u003e. 2009;102(7):1065–1074.\u003c\/li\u003e\n\u003cli\u003ePfeuffer M, Auinger A, Bley U, et al. Effect of quercetin on traits of the metabolic syndrome, endothelial function and inflammation in men with different ApoE isoforms. \u003cem\u003eMol Nutr Food Res\u003c\/em\u003e. 2013;57(7):1117–1125.\u003c\/li\u003e\n\u003cli\u003eBrüll V, Burak C, Stoffel-Wagner B, et al. Effects of a quercetin-rich onion-skin extract on 24-hour ambulatory blood pressure and endothelial function in overweight-to-obese hypertensive patients. \u003cem\u003eBr J Nutr\u003c\/em\u003e. 2017;117(3):403–414.\u003c\/li\u003e\n\u003cli\u003eYamada S, Shirai M, Inaba Y, Takara T. Effects of repeated oral intake of a quercetin-containing supplement on allergic reaction. \u003cem\u003eFood Sci Biotechnol\u003c\/em\u003e. 2022;31(13):1623–1633.\u003c\/li\u003e\n\u003cli\u003eJafarinia M, Sadat Hosseini M, Kasiri N, et al. Quercetin with the potential effect on allergic diseases. \u003cem\u003eAllergy Asthma Clin Immunol\u003c\/em\u003e. 2020;16:36.\u003c\/li\u003e\n\u003cli\u003eKhan WA, Patel N, et al. Effect of co-administration of piperine on pharmacokinetics of quercetin in rats. \u003cem\u003ePhytother Res\u003c\/em\u003e. 2014.\u003c\/li\u003e\n\u003cli\u003eKnab AM, Shanely RA, Henson DA, et al. Influence of quercetin supplementation on disease risk factors in community-dwelling adults. \u003cem\u003eMed Sci Sports Exerc\u003c\/em\u003e. 2011;43(10):1795–1801.\u003c\/li\u003e\n\u003cli\u003eHowitz KT, Bitterman KJ, Cohen HY, et al. Small molecule activators of sirtuins extend Saccharomyces cerevisiae lifespan. \u003cem\u003eNature\u003c\/em\u003e. 2003;425(6954):191–196.\u003c\/li\u003e\n\u003cli\u003eAhn J, Lee H, Kim S, et al. The anti-obesity effect of quercetin is mediated by the AMPK and MAPK signaling pathways. \u003cem\u003eBiochem Biophys Res Commun\u003c\/em\u003e. 2008;373(4):545–549.\u003c\/li\u003e\n\u003cli\u003eHarwood M, Danielewska-Nikiel B, Borzelleca JF, et al. A critical review of the data related to the safety of quercetin and lack of evidence of in vivo toxicity. \u003cem\u003eFood Chem Toxicol\u003c\/em\u003e. 2007;45(11):2179–2205.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cem\u003eReferences cited as scientific context, not endorsement of any product. Statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement, particularly if you are pregnant, nursing, taking prescription medications, or planning surgery.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eHave a question? \u003ca href=\"mailto:support@truehealthprotocol.health\"\u003esupport@truehealthprotocol.health\u003c\/a\u003e\u003c\/p\u003e\n","brand":"True Health Protocol","offers":[{"title":"Default Title","offer_id":47839101059290,"sku":"THP-QUERCETIN-500-60","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/5158\/1658\/files\/thp_quercetin.png?v=1778047684"},{"product_id":"apigenin-50mg-cd38-inhibitor-for-nmn-nad-stacks","title":"Apigenin 50mg + BioPerine | CD38 Inhibitor for NMN, NAD+ \u0026 Sirtuin Stacks","description":"\u003ch2\u003eThe 30-second answer\u003c\/h2\u003e\n\u003cp\u003eApigenin is a flavonoid found in chamomile, parsley, and celery. It has a single mechanism that puts it in serious longevity protocols: it \u003cstrong\u003einhibits CD38\u003c\/strong\u003e, the membrane glycohydrolase that consumes NAD\u003csup\u003e+\u003c\/sup\u003e and whose tissue activity rises several-fold with age (Camacho-Pereira et al., \u003cem\u003eCell Metabolism\u003c\/em\u003e 2016; Chini et al., \u003cem\u003eCell Metabolism\u003c\/em\u003e 2020). NAD\u003csup\u003e+\u003c\/sup\u003e precursors like \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003eNMN\u003c\/a\u003e, \u003ca href=\"\/he\/products\/nmn-1000mg-double-strength-60-capsules-30-day-supply\"\u003edouble-strength NMN\u003c\/a\u003e, and \u003ca href=\"\/he\/products\/new-nad-hard-capsules-daily-nad-boost-for-energy-longevity\"\u003eNR\u003c\/a\u003e raise NAD\u003csup\u003e+\u003c\/sup\u003e from the production side. Apigenin slows the leak on the consumption side. Both sides need to work, which is why apigenin is the third leg of the canonical Sinclair-style NMN stack — a precursor (NMN\/NR), a methyl donor (\u003ca href=\"\/he\/products\/tmg-1000mg-trimethylglycine-methyl-donor-for-nmn-nad-stacks\"\u003eTMG\u003c\/a\u003e), and a CD38 inhibitor (apigenin). Apigenin also contributes mild senolytic activity (Yousefzadeh et al., \u003cem\u003eEBioMedicine\u003c\/em\u003e 2018) and SASP suppression, and it modulates GABA\u003csub\u003eA\u003c\/sub\u003e receptors (Salgueiro et al., \u003cem\u003ePharmacol Biochem Behav\u003c\/em\u003e 1997) — which is why some users notice a calmer baseline and improved sleep within the first weeks. Each capsule pairs 50 mg of 98%-standardized apigenin with 5 mg of BioPerine\u003csup\u003e®\u003c\/sup\u003e, the piperine extract that solves apigenin's first-pass-metabolism problem.\u003c\/p\u003e\n\n\u003ch2\u003eWhy a flavonoid ended up in NAD\u003csup\u003e+\u003c\/sup\u003e research\u003c\/h2\u003e\n\u003cp\u003eTissue NAD\u003csup\u003e+\u003c\/sup\u003e falls roughly 50% between ages 20 and 60 (Massudi et al., \u003cem\u003ePLoS ONE\u003c\/em\u003e 2012). Two forces drive that decline. The body makes less of it as the salvage pathway slows, and it \u003cem\u003edestroys more of it\u003c\/em\u003e, because CD38 — the dominant NADase in mammalian tissue — becomes more active with age. Camacho-Pereira et al. (2016) showed that CD38 expression rises in liver, adipose tissue, skeletal muscle, and spleen as mice age, and that CD38-knockout mice are protected against age-related NAD\u003csup\u003e+\u003c\/sup\u003e loss. Tarragó et al. (\u003cem\u003eCell Metabolism\u003c\/em\u003e 2018) extended this work with the first orally-active CD38 inhibitor (the experimental compound 78c), demonstrating that pharmacologically blocking CD38 in old mice raised tissue NAD\u003csup\u003e+\u003c\/sup\u003e, restored mitochondrial function, and improved exercise performance — without giving any precursor at all. The implication: precursor supply is half the equation; precursor protection is the other half.\u003c\/p\u003e\n\n\u003cp\u003eYou can't take 78c (it's not a supplement). But apigenin inhibits CD38 in the same way, with a measured IC\u003csub\u003e50\u003c\/sub\u003e in the low-micromolar range (Escande et al., \u003cem\u003eDiabetes\u003c\/em\u003e 2013) — the paper that first identified flavonoids as CD38 inhibitors and showed apigenin raised tissue NAD\u003csup\u003e+\u003c\/sup\u003e in obese mice while improving glucose tolerance. Chini's group at Mayo Clinic (now at the Kogod Center on Aging) has since published a sustained line of work mapping CD38's role in inflammaging, NAD\u003csup\u003e+\u003c\/sup\u003e homeostasis, and the metabolic syndrome — putting CD38 inhibition on the same priority list as autophagy activation and senescent-cell clearance for healthspan-focused intervention.\u003c\/p\u003e\n\n\u003cp\u003eThis is where apigenin became the third leg of the stack. NMN feeds production. TMG replaces the methyl groups consumed when nicotinamide (the breakdown product) is exported. Apigenin slows the destruction. None of the three is the precursor. They're what makes the precursor keep working at month six instead of plateauing at month two.\u003c\/p\u003e\n\n\u003ch2\u003eThe three mechanisms apigenin actually has\u003c\/h2\u003e\n\u003cp\u003eMost antioxidant flavonoids do one thing in three different cell types. Apigenin does three different things, and they reinforce each other in ways that matter for a longevity protocol.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e1. CD38 inhibition — the NAD\u003csup\u003e+\u003c\/sup\u003e-protecting mechanism.\u003c\/strong\u003e Apigenin binds CD38's active site and slows the enzymatic consumption of NAD\u003csup\u003e+\u003c\/sup\u003e. The net effect in the Escande 2013 obese-mouse model was a measurable rise in tissue NAD\u003csup\u003e+\u003c\/sup\u003e levels, with the largest gains in liver and adipose tissue (the two tissues where CD38 expression is highest). This is the mechanism that puts apigenin alongside NMN and TMG in the canonical Sinclair-style stack — and it's the reason apigenin is dosed continuously rather than in pulses (CD38 is constitutively active; the inhibition needs to be steady-state).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e2. Mild senolytic activity.\u003c\/strong\u003e Apigenin selectively triggers apoptosis in some senescent cells. Per the Yousefzadeh 2018 head-to-head screen, it is weaker than \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003efisetin\u003c\/a\u003e or \u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003equercetin\u003c\/a\u003e per milligram — it would not be the supplement to choose if senolysis were the only goal — but it adds a low-grade clearing mechanism on top of its primary CD38 work. Some advanced protocols stack all three flavonoids rather than choose one, taking advantage of partially-overlapping but non-identical target profiles.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e3. SASP suppression and anti-inflammatory action.\u003c\/strong\u003e Even when apigenin doesn't kill a senescent cell outright, it reduces the Senescence-Associated Secretory Phenotype — the cocktail of inflammatory cytokines (IL-6, IL-8, TNF-α, CXCL chemokines) that senescent cells release into surrounding tissue. Perrott et al. (\u003cem\u003eGeroScience\u003c\/em\u003e 2017) showed apigenin suppressed SASP transcription in pre-adipocyte models without requiring senolysis. For NAD\u003csup\u003e+\u003c\/sup\u003e-protocol users this matters because chronic low-grade inflammation is one of the things that \u003cem\u003eactivates\u003c\/em\u003e CD38 in the first place (Chini et al., \u003cem\u003eNat Metab\u003c\/em\u003e 2024 review on inflammaging). Apigenin closes that loop: less SASP → less inflammation → less CD38 activation → more NAD\u003csup\u003e+\u003c\/sup\u003e retained.\u003c\/p\u003e\n\n\u003cp\u003eThere is a fourth mechanism that's not part of the longevity argument but explains a common subjective report: \u003cstrong\u003eapigenin is the active sleep\/calming compound in chamomile\u003c\/strong\u003e. It binds GABA\u003csub\u003eA\u003c\/sub\u003e receptors as a partial agonist (Salgueiro 1997; Avallone et al., \u003cem\u003eBiochem Pharmacol\u003c\/em\u003e 2000) — the same family of receptors targeted by benzodiazepines, but with much weaker affinity. This is why a strong cup of chamomile tea relaxes you, and why some apigenin-supplement users report falling asleep faster and waking less in the first 1–3 weeks. If sleep quality is one of your goals, dose in the evening; if NAD\u003csup\u003e+\u003c\/sup\u003e protection is the only goal, dose in the morning with the rest of your stack.\u003c\/p\u003e\n\n\u003ch2\u003eWhere this sits in the longevity-protocol stack\u003c\/h2\u003e\n\u003cp\u003eThe most useful way to think about apigenin is in terms of what it pairs with, because it has very limited reason to be a standalone purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf you take a NAD\u003csup\u003e+\u003c\/sup\u003e precursor\u003c\/strong\u003e — \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003ePure NMN 500mg\u003c\/a\u003e, \u003ca href=\"\/he\/products\/nmn-1000mg-double-strength-60-capsules-30-day-supply\"\u003eNMN 1000mg\u003c\/a\u003e, \u003ca href=\"\/he\/products\/new-nad-hard-capsules-daily-nad-boost-for-energy-longevity\"\u003eNR Hard Capsules\u003c\/a\u003e, \u003ca href=\"\/he\/products\/liposomal-nad-ultimate-1000mg\"\u003eLiposomal NAD+ Ultimate\u003c\/a\u003e, \u003ca href=\"\/he\/products\/zoone-nad-1000mg-pure-focus-formula\"\u003eNAD+ Pure Focus\u003c\/a\u003e, or the \u003ca href=\"\/he\/products\/liquid-nad-anti-aging-drink-advanced-cellular-rejuvenation\"\u003eLiquid NAD+ stick packs\u003c\/a\u003e — apigenin is the highest-value addition you can make for protecting what the precursor produces. The two co-additions that the longevity-clinic literature converges on are TMG (replaces methyl groups burned during nicotinamide clearance) and apigenin (slows CD38). One protects the upstream cycle. The other protects the downstream one.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf you also run a senolytic protocol\u003c\/strong\u003e — typically \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin 500mg\u003c\/a\u003e in monthly pulses, or \u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003eQuercetin 500mg\u003c\/a\u003e daily — apigenin's daily SASP suppression complements both. Fisetin clears senescent cells in 2-day high-dose pulses; apigenin reduces the day-to-day inflammatory output of any cells that aren't being cleared in this cycle. That's the case for stacking all three flavonoids rather than choosing one.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your primary goal is sleep\u003c\/strong\u003e — and you're already on a precursor — apigenin in the evening, paired with \u003ca href=\"\/he\/products\/magnesium-glycinate-400mg-sleep-and-nad-methylation\"\u003eMagnesium Glycinate\u003c\/a\u003e and \u003ca href=\"\/he\/products\/glycine-1500mg-glynac-partner-glutathione-sleep-longevity\"\u003eGlycine\u003c\/a\u003e, gives you the GABAergic calming layer on top of the longevity rationale. This is the dual-purpose protocol some users prefer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat apigenin is NOT.\u003c\/strong\u003e It is not a precursor. Taking apigenin alone, without a precursor, will not raise NAD\u003csup\u003e+\u003c\/sup\u003e meaningfully — you need substrate for the salvage pathway. Apigenin's job is to slow loss; you still need to feed input. It's also not a stimulant or an energy product; the calming effect is the only thing you may notice subjectively.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the bottle\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApigenin (98% pure):\u003c\/strong\u003e 50 mg per capsule, extracted from chamomile flower (\u003cem\u003eMatricaria chamomilla\u003c\/em\u003e) — the natural source with the highest apigenin density. Parsley, celery, and artichoke contain it too, in much smaller amounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBioPerine\u003csup\u003e®\u003c\/sup\u003e (black pepper extract, standardized to 95% piperine):\u003c\/strong\u003e 5 mg per capsule. Apigenin's bioavailability is the limiting factor in every flavonoid supplement. Piperine inhibits the gut UDP-glucuronosyltransferases (UGTs) and CYP3A4 that would otherwise metabolize apigenin in the gut wall before it reaches systemic circulation, raising blood AUC several-fold (Atal et al., \u003cem\u003eJ Pharmacol Exp Ther\u003c\/em\u003e 1985, the foundational piperine bioenhancer paper; Bhardwaj et al., \u003cem\u003eJ Pharmacol Exp Ther\u003c\/em\u003e 2002).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 vegetarian HPMC capsules per bottle:\u003c\/strong\u003e a 2-month supply at the standard 1-capsule daily dose, or a 1-month supply at the higher 2-capsule dose used in some longevity-clinic protocols.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree of:\u003c\/strong\u003e gluten, soy, dairy, GMO, magnesium stearate, titanium dioxide, artificial colors, and synthetic flow agents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThe bioavailability problem (and why every cheap apigenin capsule is mostly water)\u003c\/h2\u003e\n\u003cp\u003eApigenin without an absorption enhancer is a frustrating molecule. Free apigenin is poorly soluble in water, and what does dissolve is rapidly conjugated by gut UGTs into apigenin-glucuronide and apigenin-sulfate before it ever reaches the portal circulation. Plasma free-apigenin levels after a 50 mg unenhanced dose are typically below the threshold needed for measurable CD38 inhibition in tissue. Imran et al. (\u003cem\u003eFood Chem\u003c\/em\u003e 2020 review) put the unenhanced bioavailability fraction in the low single-digit percent range.\u003c\/p\u003e\n\n\u003cp\u003eThe two interventions that work in published research:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiperine co-administration.\u003c\/strong\u003e The Atal\/Bhardwaj line of work shows piperine inhibits both intestinal UGT activity and the CYP3A4-mediated first-pass metabolism that destroys apigenin. The 5 mg BioPerine in each capsule is the same dose used in published bioenhancer studies for curcumin, resveratrol, and other low-bioavailability polyphenols.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFat-meal pairing.\u003c\/strong\u003e Apigenin is fat-soluble; absorption rises substantially when taken with a meal containing 5+ grams of fat (eggs, avocado, olive oil, full-fat yogurt). The combination of piperine + dietary fat is what closes the bioavailability gap that an unenhanced capsule fails to address.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThis is why the dose comparison matters. A 100 mg apigenin capsule with no piperine and no food can deliver less to your tissues than a 50 mg apigenin + BioPerine capsule taken with breakfast. The label dose is not what reaches CD38 — the absorbed dose is.\u003c\/p\u003e\n\n\u003ch2\u003eDose curve: 25 mg \/ 50 mg \/ 100 mg \/ advanced\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e25 mg (sub-therapeutic for CD38 work).\u003c\/strong\u003e Common in multivitamins and \"longevity blend\" caps. The plasma levels reached at this dose with no enhancer are likely below the IC\u003csub\u003e50\u003c\/sub\u003e for CD38 inhibition in tissue. Useful as part of a polyphenol matrix, not useful as a CD38 strategy on its own.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e50 mg + piperine (our default).\u003c\/strong\u003e The dose-equivalent that, with bioavailability enhancement and a fat-meal, plausibly reaches the low-micromolar plasma concentrations associated with CD38 inhibition in the Escande 2013 mouse model. The dose most longevity-protocol practitioners use for daily NAD\u003csup\u003e+\u003c\/sup\u003e protection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e100 mg (advanced).\u003c\/strong\u003e Two capsules daily, used in some clinical longevity protocols for users with measured low NAD\u003csup\u003e+\u003c\/sup\u003e or for pairing with a high-dose NMN protocol (1000+ mg). Splitting morning and evening helps maintain plasma levels across the 24-hour cycle, since apigenin's plasma half-life is roughly 90 minutes (Gradolatto et al., \u003cem\u003eDrug Metab Dispos\u003c\/em\u003e 2005).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e200+ mg (research, not recommended for daily use).\u003c\/strong\u003e Doses above 200 mg have been used in short-term cancer-cell pharmacology research but exceed what's been studied for daily longevity-protocol use. There is no published evidence that going higher gives more CD38 inhibition once the IC\u003csub\u003e50\u003c\/sub\u003e is cleared.\u003c\/p\u003e\n\n\u003ch2\u003eWeek-by-week expectation timeline\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDays 1–7.\u003c\/strong\u003e The most-reported subjective change is calmer baseline and slightly improved sleep onset (the GABA\u003csub\u003eA\u003c\/sub\u003e partial-agonist effect). No measurable NAD\u003csup\u003e+\u003c\/sup\u003e change yet — CD38 inhibition takes longer to translate into tissue-level NAD\u003csup\u003e+\u003c\/sup\u003e rise.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWeeks 2–4.\u003c\/strong\u003e SASP suppression begins to register at the bloodwork level. Users with elevated baseline CRP often see a modest decline (no published RCT in humans for this specific endpoint with apigenin alone — this is extrapolation from pre-adipocyte data plus broader flavonoid trials).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWeeks 4–8.\u003c\/strong\u003e If you're on a precursor + apigenin combination, this is the window where the \"plateau\" some people hit on precursor-alone tends to reverse. Subjectively this looks like the morning energy and recovery returning to where they were at month two of the precursor.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMonths 2–6.\u003c\/strong\u003e The compounding window. CD38 protection is a steady-state mechanism — its benefit is a slope, not a step. Tissue NAD\u003csup\u003e+\u003c\/sup\u003e trajectory at month six on precursor + apigenin + TMG is meaningfully different from precursor alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eYear 1+.\u003c\/strong\u003e The horizon at which the inflammaging argument applies. Lower CD38 activity, combined with reduced SASP, plausibly slows the chronic-inflammation feedback loop that drives many age-related declines. Bloodwork (hsCRP, IL-6 if your provider runs it) is the place this shows up.\u003c\/p\u003e\n\n\u003ch2\u003eHow to take it\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDefault protocol (NAD\u003csup\u003e+\u003c\/sup\u003e-stack pairing):\u003c\/strong\u003e 1 capsule (50 mg) in the morning with breakfast, alongside your \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003eNMN\u003c\/a\u003e, \u003ca href=\"\/he\/products\/new-nad-hard-capsules-daily-nad-boost-for-energy-longevity\"\u003eNR\u003c\/a\u003e, or NAD\u003csup\u003e+\u003c\/sup\u003e precursor. Take it with a meal containing some fat (eggs, avocado, olive oil) — this matters more than most users realize.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHigher protocol (advanced longevity stack):\u003c\/strong\u003e 2 capsules (100 mg) daily, taken together in the morning or split morning and evening. Some longevity clinics use this dose for users with measured low NAD\u003csup\u003e+\u003c\/sup\u003e or with a high-dose precursor protocol (NMN 1000 mg+).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSleep-priority protocol:\u003c\/strong\u003e 1 capsule (50 mg) in the evening with dinner. Trades the morning NAD\u003csup\u003e+\u003c\/sup\u003e-window logic for the GABAergic calming benefit. Stacks well with \u003ca href=\"\/he\/products\/magnesium-glycinate-400mg-sleep-and-nad-methylation\"\u003eMagnesium Glycinate\u003c\/a\u003e and \u003ca href=\"\/he\/products\/glycine-1500mg-glynac-partner-glutathione-sleep-longevity\"\u003eGlycine\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStacking note.\u003c\/strong\u003e Apigenin pairs cleanly with NMN, NR, liposomal NAD\u003csup\u003e+\u003c\/sup\u003e, TMG, fisetin, quercetin, \u003ca href=\"\/he\/products\/spermidine-10mg-wheat-germ-extract\"\u003espermidine\u003c\/a\u003e, \u003ca href=\"\/he\/products\/resveratrol-600mg-60-capsules-30-day-supply\"\u003eresveratrol\u003c\/a\u003e, and the foundational stack. There is no need to cycle apigenin — CD38 is constitutively active; the inhibition needs to be continuous to be useful.\u003c\/p\u003e\n\n\u003ch2\u003eStack pairings (with mechanism rationale)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e+ \u003ca href=\"\/he\/products\/pure-nmn-500mg-60-capsules-30-day-supply\"\u003eNMN\u003c\/a\u003e or \u003ca href=\"\/he\/products\/new-nad-hard-capsules-daily-nad-boost-for-energy-longevity\"\u003eNR\u003c\/a\u003e:\u003c\/strong\u003e the canonical pairing. Precursor raises NAD\u003csup\u003e+\u003c\/sup\u003e; apigenin slows the consumption. Always co-dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+ \u003ca href=\"\/he\/products\/tmg-1000mg-trimethylglycine-methyl-donor-for-nmn-nad-stacks\"\u003eTMG\u003c\/a\u003e:\u003c\/strong\u003e the third leg of the Sinclair-style stack. TMG donates methyl groups burned during the methylation of nicotinamide (the breakdown product of any precursor). The full triad — precursor + TMG + apigenin — is what most longevity-focused protocols converge on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+ \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003eFisetin\u003c\/a\u003e:\u003c\/strong\u003e the senolytic complement. Fisetin pulses (typically 1500 mg\/day for 2 days, monthly) clear senescent cells; apigenin's daily SASP suppression reduces the inflammatory output between pulses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+ \u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003eQuercetin\u003c\/a\u003e:\u003c\/strong\u003e the most-studied senolytic in human trials. Pairs with apigenin for daily flavonoid-class coverage of CD38 (apigenin) plus broader senescence work (quercetin).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+ \u003ca href=\"\/he\/products\/resveratrol-600mg-60-capsules-30-day-supply\"\u003eResveratrol\u003c\/a\u003e:\u003c\/strong\u003e the SIRT1 activator. Apigenin protects NAD\u003csup\u003e+\u003c\/sup\u003e, which sirtuins consume; resveratrol activates the consumption. Complementary, not redundant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+ \u003ca href=\"\/he\/products\/spermidine-10mg-wheat-germ-extract\"\u003eSpermidine\u003c\/a\u003e:\u003c\/strong\u003e the autophagy activator. Different cellular renewal pathway (autophagy-of-proteins vs CD38-protection-of-NAD\u003csup\u003e+\u003c\/sup\u003e) — additive, not overlapping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+ \u003ca href=\"\/he\/products\/magnesium-glycinate-400mg-sleep-and-nad-methylation\"\u003eMagnesium Glycinate\u003c\/a\u003e + \u003ca href=\"\/he\/products\/glycine-1500mg-glynac-partner-glutathione-sleep-longevity\"\u003eGlycine\u003c\/a\u003e:\u003c\/strong\u003e the sleep stack. Apigenin's GABA\u003csub\u003eA\u003c\/sub\u003e activity layers on top of magnesium and glycine for users prioritizing sleep quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eForm comparison: chamomile tea vs parsley vs 50 mg vs 100 mg\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eChamomile tea.\u003c\/strong\u003e A strong cup contains roughly 0.3–1 mg of free apigenin. To reach a 50 mg dose from tea you would need to drink 50–150 cups daily. Tea delivers a real calming effect at low apigenin levels; it does not deliver a CD38-relevant dose.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eParsley and celery.\u003c\/strong\u003e Parsley is the highest dietary source by weight (roughly 215 mg\/100 g dry parsley flake; 45 mg\/100 g fresh) — but you'd need to eat 100+ grams of fresh parsley daily for a 50 mg dose, and absorption from food matrix is lower than from a piperine-enhanced capsule. Useful as part of a healthy diet; not a viable replacement for a targeted CD38 protocol.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eApigenin 50 mg + piperine (this product).\u003c\/strong\u003e The dose used in longevity-protocol practice, with the bioavailability enhancement that closes the absorption gap. The default for NAD\u003csup\u003e+\u003c\/sup\u003e stacking.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eApigenin 100 mg \/ 200 mg without piperine.\u003c\/strong\u003e A higher label dose without bioavailability enhancement does not clearly outperform a lower label dose with enhancement. Read the SUPPLEMENT FACTS panel: if there's no piperine\/BioPerine and no liposomal\/phytosome carrier, the higher label dose is partially marketing.\u003c\/p\u003e\n\n\u003ch2\u003eQuality \u0026amp; sourcing\u003c\/h2\u003e\n\u003cp\u003eManufactured in a U.S. cGMP-compliant facility. Each batch is tested for identity, potency, heavy metals (lead, arsenic, cadmium, mercury), and microbial contamination. Apigenin is standardized to 98% from \u003cem\u003eMatricaria chamomilla\u003c\/em\u003e extract; the BioPerine\u003csup\u003e®\u003c\/sup\u003e is the patented form of piperine from Sabinsa Corporation, the form used in the published bioenhancer literature. Capsule shell is HPMC (vegetarian, no gelatin); no magnesium stearate, no titanium dioxide, no synthetic dyes. Per-batch certificate of analysis available on request through customer service.\u003c\/p\u003e\n\n\u003ch2\u003eWho this is for\u003c\/h2\u003e\n\u003cp\u003eApigenin is most useful for someone already running a NAD\u003csup\u003e+\u003c\/sup\u003e precursor protocol who wants the protection-side mechanism added. It's also useful for someone running a senolytic protocol who wants daily SASP suppression between fisetin pulses, and for someone whose evening routine could use a mild GABAergic layer (typically combined with magnesium and glycine). It is reasonable as a long-term, continuous addition — there's no reason to cycle it.\u003c\/p\u003e\n\n\u003cp\u003eIt is less useful as a standalone product. Apigenin without a precursor will not raise NAD\u003csup\u003e+\u003c\/sup\u003e meaningfully; the substrate side still needs to be addressed. If you're new to longevity supplementation and choosing a single SKU, start with the precursor (NMN or NR) and add apigenin once the precursor is established.\u003c\/p\u003e\n\n\u003ch2\u003eWho should not take this\u003c\/h2\u003e\n\u003cp\u003eApigenin inhibits CYP3A4, CYP2C9, and several other liver enzymes that metabolize prescription drugs. If you take any of the following, talk to your physician before starting apigenin:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBlood thinners (warfarin, apixaban, rivaroxaban, dabigatran)\u003c\/li\u003e\n\u003cli\u003eStatins (atorvastatin, simvastatin, lovastatin in particular)\u003c\/li\u003e\n\u003cli\u003eCalcium channel blockers (amlodipine, diltiazem)\u003c\/li\u003e\n\u003cli\u003eImmunosuppressants (cyclosporine, tacrolimus)\u003c\/li\u003e\n\u003cli\u003eCertain antiarrhythmics, antifungals, and antiretrovirals\u003c\/li\u003e\n\u003cli\u003eAny medication labeled \"do not take with grapefruit\" — the interaction mechanism is similar (CYP3A4 inhibition)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eApigenin has weak estrogenic activity in cell models. People with hormone-sensitive conditions (estrogen-receptor-positive breast cancer history, endometriosis) should consult their oncologist or gynecologist before use. Discontinue 2 weeks before any planned surgery (interaction with anesthetics is poorly studied; standard precaution).\u003c\/p\u003e\n\n\u003cp\u003eNot recommended during pregnancy or breastfeeding (insufficient safety data for supplemental doses) or for anyone under 18.\u003c\/p\u003e\n\n\u003cp\u003eChamomile-allergic individuals (Asteraceae\/Compositae family — also includes ragweed, daisies, marigolds) should avoid this product.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan't I just drink chamomile tea?\u003c\/strong\u003e\u003cbr\u003e\nA strong cup of chamomile tea contains roughly 0.3–1 mg of apigenin. To get 50 mg from tea you would need to drink 50–150 cups daily. The supplement form delivers the dose used in research; tea delivers the calming effect of chamomile, which is real but driven by much lower apigenin levels acting on GABA\u003csub\u003eA\u003c\/sub\u003e receptors in the brain — the calming effect is dose-low, the CD38 effect needs dose-high.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between apigenin, fisetin, and quercetin?\u003c\/strong\u003e\u003cbr\u003e\nAll three are flavonoids and all three have some senolytic activity. The differences matter for what you're optimizing for. \u003cem\u003eApigenin\u003c\/em\u003e is the only one of the three with primary action on CD38, which is why it's the NAD\u003csup\u003e+\u003c\/sup\u003e-stack pairing. \u003ca href=\"\/he\/products\/fisetin-500mg-senolytic-flavonoid-for-cellular-cleanup\"\u003e\u003cem\u003eFisetin\u003c\/em\u003e\u003c\/a\u003e is the most potent senolytic per milligram in the Yousefzadeh 2018 head-to-head and crosses into brain tissue best — choose it if cellular cleanup is your primary goal, typically dosed in monthly 2-day pulses. \u003ca href=\"\/he\/products\/quercetin-500mg-senolytic-flavonoid-natural-antihistamine\"\u003e\u003cem\u003eQuercetin\u003c\/em\u003e\u003c\/a\u003e has the strongest human-trial evidence (it's the \"Q\" in the Mayo Clinic D+Q protocol), works synergistically with dasatinib, and adds antihistamine activity. Many users in advanced protocols take all three, each at its standard dose; the targets overlap only partially.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy do I need apigenin if I'm already taking NMN?\u003c\/strong\u003e\u003cbr\u003e\nNMN raises NAD\u003csup\u003e+\u003c\/sup\u003e by feeding the production side of the cycle (the salvage pathway). Apigenin protects what NMN produces by slowing CD38, the enzyme that destroys NAD\u003csup\u003e+\u003c\/sup\u003e and whose activity rises with age. They're complementary, not redundant. The same logic applies to TMG: NMN production burns through methyl groups; TMG replaces them. NMN alone works. NMN with TMG and apigenin works longer, with less plateau at month two.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow long until I notice anything?\u003c\/strong\u003e\u003cbr\u003e\nApigenin's primary effects (CD38 inhibition, senolytic activity, SASP suppression) are biological — you would not feel them in the first week. The most commonly reported subjective effect is mild improvement in sleep quality and a calmer baseline within the first 1–3 weeks, which tracks with apigenin's known partial-agonist activity at GABA\u003csub\u003eA\u003c\/sub\u003e receptors. The longevity benefits accrue silently over months and are best measured at the bloodwork level (hsCRP for inflammation, NAD\u003csup\u003e+\u003c\/sup\u003e if your provider can run a blood NAD\u003csup\u003e+\u003c\/sup\u003e panel).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the BioPerine necessary?\u003c\/strong\u003e\u003cbr\u003e\nYes — and this is the single biggest difference between supplements in this category. Apigenin without an absorption enhancer is largely metabolized in the gut wall before it reaches circulation; published bioavailability is in the low single-digit percent range. The 5 mg of piperine (BioPerine) increases apigenin bioavailability several-fold by inhibiting the UGTs and CYP3A4 that would otherwise destroy it on the way in (Atal 1985, Bhardwaj 2002). A capsule without piperine costs less to manufacture and delivers a fraction of the dose to your blood.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy not take 100 mg or 200 mg?\u003c\/strong\u003e\u003cbr\u003e\nThe published CD38-inhibition IC\u003csub\u003e50\u003c\/sub\u003e in the Escande 2013 mouse model is reached at the 50 mg + piperine + fat-meal protocol. Going higher hasn't been shown to give more CD38 inhibition once the IC\u003csub\u003e50\u003c\/sub\u003e is cleared. Some advanced longevity-clinic protocols use 100 mg (2 capsules) for users with measured low NAD\u003csup\u003e+\u003c\/sup\u003e or high-dose NMN — this is a reasonable upper bound, but more is not better past that point.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I take apigenin with my evening dose if I want the sleep benefit?\u003c\/strong\u003e\u003cbr\u003e\nYes. The CD38 mechanism doesn't care what time of day you dose — it works on a steady-state basis, and apigenin's plasma half-life of ~90 minutes means you get the same daily AUC whether you take it at 8 AM or 8 PM. If sleep is your priority, evening dosing with dinner gives you the GABAergic effect close to bedtime.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes apigenin compete with sirtuin activation?\u003c\/strong\u003e\u003cbr\u003e\nNo — and this confuses some people. Sirtuins (SIRT1\/3\/6 in particular) \u003cem\u003econsume\u003c\/em\u003e NAD\u003csup\u003e+\u003c\/sup\u003e; that's the whole point of feeding them with a precursor. Apigenin slows CD38, which is a different NAD\u003csup\u003e+\u003c\/sup\u003e-consuming enzyme. CD38 is wasteful (its NAD\u003csup\u003e+\u003c\/sup\u003e consumption doesn't do useful biological work for longevity-relevant tissues at age 60+); sirtuins are productive (they catalyze deacetylation and other useful reactions). Apigenin slows the wasteful consumer; resveratrol activates the productive ones. They're complementary.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill apigenin make me drowsy during the day?\u003c\/strong\u003e\u003cbr\u003e\nAt a 50 mg morning dose, no — the GABAergic effect is mild and is much more noticeable when the apigenin dose lands closer to a normal sleep window. If you're sensitive to sedatives generally, start at half a capsule for a few days. If you find any morning grogginess, switch to evening dosing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I open the capsule and take the powder?\u003c\/strong\u003e\u003cbr\u003e\nYou can, but apigenin is bitter and has poor solubility in water. Most users prefer to swallow the capsule with water or a small amount of fat-containing food.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does apigenin compare to the Sinclair-recommended dose?\u003c\/strong\u003e\u003cbr\u003e\nDr. David Sinclair has discussed taking apigenin daily as part of his personal longevity protocol; he hasn't published a specific dose. The 50 mg + piperine + fat-meal protocol is the dose-equivalent that the underlying CD38-inhibition pharmacology supports for daily use, and it's consistent with what longevity-clinic practitioners report using.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs there a published human RCT showing apigenin raises NAD\u003csup\u003e+\u003c\/sup\u003e?\u003c\/strong\u003e\u003cbr\u003e\nNot yet at the human-RCT level for the CD38 → NAD\u003csup\u003e+\u003c\/sup\u003e endpoint specifically. The mechanistic evidence (CD38 IC\u003csub\u003e50\u003c\/sub\u003e in Escande 2013, NAD\u003csup\u003e+\u003c\/sup\u003e rise in obese-mouse tissue, SASP suppression in pre-adipocyte models) is solid, and the human safety profile from chamomile-extract studies is reassuring, but a placebo-controlled human NAD\u003csup\u003e+\u003c\/sup\u003e-rise trial for apigenin alone has not been published as of this writing. Most clinicians who use apigenin in protocols are extrapolating from the mechanism-of-action plus the broader CD38-inhibitor literature (including the 78c animal work) rather than from a head-to-head human trial.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I cycle apigenin or do I need to take it daily?\u003c\/strong\u003e\u003cbr\u003e\nCD38 is constitutively active — its consumption of NAD\u003csup\u003e+\u003c\/sup\u003e happens around the clock. The inhibition needs to be continuous to be useful. There's no published rationale for cycling, and the safety data on chronic apigenin intake from chamomile tea (people drink it daily for decades) is reassuring. Daily continuous use is the standard.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat about apigenin and thyroid?\u003c\/strong\u003e\u003cbr\u003e\nApigenin has been studied for weak inhibitory effects on thyroid peroxidase in cell models (Schmutzler et al. 2007). At supplemental doses this effect is unlikely to be clinically meaningful in someone with normal thyroid function. People with hypothyroidism on levothyroxine should mention apigenin to their endocrinologist; people with hyperthyroidism may consult their physician about whether apigenin's mild thyroid-modulating activity is desirable in their context.\u003c\/p\u003e\n\n\u003ch2\u003eThe science (selected references)\u003c\/h2\u003e\n\u003cp\u003eCamacho-Pereira J et al. \u003cem\u003eCD38 dictates age-related NAD decline and mitochondrial dysfunction through an SIRT3-dependent mechanism.\u003c\/em\u003e Cell Metab. 2016 Jun 14;23(6):1127-1139. — The age\/CD38\/NAD\u003csup\u003e+\u003c\/sup\u003e mechanism paper.\u003c\/p\u003e\n\n\u003cp\u003eTarragó MG et al. \u003cem\u003eA potent and specific CD38 inhibitor ameliorates age-related metabolic dysfunction by reversing tissue NAD+ decline.\u003c\/em\u003e Cell Metab. 2018 May 1;27(5):1081-1095.e10. — The 78c\/CD38-inhibition-without-precursor proof of concept.\u003c\/p\u003e\n\n\u003cp\u003eChini CCS et al. \u003cem\u003eThe pharmacology of CD38\/NADase: an emerging target in cancer and diseases of aging.\u003c\/em\u003e Trends Pharmacol Sci. 2020. — The Mayo Clinic group's CD38 review.\u003c\/p\u003e\n\n\u003cp\u003eEscande C et al. \u003cem\u003eFlavonoid apigenin is an inhibitor of the NAD+ ase CD38: implications for cellular NAD+ metabolism, protein acetylation, and treatment of metabolic syndrome.\u003c\/em\u003e Diabetes. 2013 Apr;62(4):1084-93. — The apigenin\/CD38 IC\u003csub\u003e50\u003c\/sub\u003e paper and obese-mouse NAD\u003csup\u003e+\u003c\/sup\u003e-rise demonstration.\u003c\/p\u003e\n\n\u003cp\u003eYousefzadeh MJ et al. \u003cem\u003eFisetin is a senotherapeutic that extends health and lifespan.\u003c\/em\u003e EBioMedicine. 2018 Oct;36:18-28. — The flavonoid head-to-head senolytic screen.\u003c\/p\u003e\n\n\u003cp\u003ePerrott KM et al. \u003cem\u003eApigenin suppresses the senescence-associated secretory phenotype and paracrine effects on breast cancer cells.\u003c\/em\u003e GeroScience. 2017 Apr;39(2):161-173. — SASP suppression paper.\u003c\/p\u003e\n\n\u003cp\u003eMassudi H et al. \u003cem\u003eAge-associated changes in oxidative stress and NAD+ metabolism in human tissue.\u003c\/em\u003e PLoS ONE. 2012;7(7):e42357. — The ~50% NAD\u003csup\u003e+\u003c\/sup\u003e-decline curve.\u003c\/p\u003e\n\n\u003cp\u003eSalgueiro JB et al. \u003cem\u003eAnxiolytic natural and synthetic flavonoid ligands of the central benzodiazepine receptor have no effect on memory tasks in rats.\u003c\/em\u003e Pharmacol Biochem Behav. 1997. — The GABA\u003csub\u003eA\u003c\/sub\u003e receptor pharmacology.\u003c\/p\u003e\n\n\u003cp\u003eAvallone R et al. \u003cem\u003ePharmacological profile of apigenin, a flavonoid isolated from Matricaria chamomilla.\u003c\/em\u003e Biochem Pharmacol. 2000 Jun 1;59(11):1387-94. — Chamomile-derived apigenin sleep\/calming pharmacology.\u003c\/p\u003e\n\n\u003cp\u003eAtal CK et al. \u003cem\u003eBiochemical basis of enhanced drug bioavailability by piperine: evidence that piperine is a potent inhibitor of drug metabolism.\u003c\/em\u003e J Pharmacol Exp Ther. 1985 Jan;232(1):258-62. — The foundational piperine bioenhancer paper.\u003c\/p\u003e\n\n\u003cp\u003eBhardwaj RK et al. \u003cem\u003ePiperine, a major constituent of black pepper, inhibits human P-glycoprotein and CYP3A4.\u003c\/em\u003e J Pharmacol Exp Ther. 2002 Aug;302(2):645-50. — The piperine\/CYP3A4 mechanism for first-pass-metabolism inhibition.\u003c\/p\u003e\n\n\u003cp\u003eGradolatto A et al. \u003cem\u003ePharmacokinetics and metabolism of apigenin in female and male rats after a single oral administration.\u003c\/em\u003e Drug Metab Dispos. 2005 Jan;33(1):49-54. — Apigenin plasma half-life and conjugation pharmacology.\u003c\/p\u003e\n\n\u003cp\u003eImran M et al. \u003cem\u003eApigenin as an anticancer agent.\u003c\/em\u003e Food Chem. 2020 Apr 25;308:125605. — Comprehensive apigenin pharmacology review including bioavailability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFDA disclaimer:\u003c\/strong\u003e These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before starting any new supplement, especially if you take prescription medication or have a medical condition.\u003c\/p\u003e\n","brand":"True Health Protocol","offers":[{"title":"Default Title","offer_id":47839318507738,"sku":"THP-APIGENIN-50-60","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/5158\/1658\/files\/thp_apigenin.png?v=1778047674"}],"url":"https:\/\/truehealthprotocol.health\/he\/collections\/senolytics.oembed","provider":"True Health Protocol","version":"1.0","type":"link"}