Fisetin
Best-in-class: Fisetin
A plant flavonoid and the leading candidate 'senolytic' — a compound that helps clear senescent 'zombie' cells that accumulate with age and drive inflammation.
How Fisetin actually works
Senescent cells are cells that have stopped dividing but refuse to die, and they secrete a persistent inflammatory cocktail — the senescence-associated secretory phenotype — that damages the tissue around them. They accumulate with age. A senolytic selectively pushes those cells into apoptosis, which they resist by upregulating specific survival pathways; fisetin appears to interfere with those. That's the basis for intermittent high-dose 'hit and run' protocols rather than daily use: you only need the drug present long enough to kill cells that are already flagged.
Fisetin quick facts
| Suggested dose | Often run as periodic high-dose (e.g., ~1,000–1,500 mg for 2–3 consecutive days monthly); take with fat. |
| How often | Periodic high-dose - 2-3 consecutive days, then weeks off |
| Who it's for | Longevity experimenters targeting cellular senescence. |
| Best-in-class brand | Fisetin |
✅ Clinically validated
- Human senolytic trials are ONGOING; current evidence is strong in animals (extended healthspan) and mechanistic in humans.
- Acts as an antioxidant and anti-inflammatory in human cell/tissue studies.
📊 Correlative data
- Senescent-cell burden rises with age and tracks with age-related disease.
🧪 Theoretical / extrapolated benefits
- The senolytic 'hit-and-run' longevity protocol (high-dose, 2–3 days/month) is popular and mechanistically exciting, but human outcome data isn't in yet.
These tiers tell you how much human evidence exists — not how well something works. This is the research space, and most of what’s in here is new rather than disproven. Something sitting at “theoretical” usually means nobody has funded the trial, not that the trial was run and failed.
The trap runs the other way too: something can be clinically validated and still do very little for you specifically. A statistically significant result in a study population is not a promise about your body.
- ✅ Clinically validated — human randomised trials or meta-analyses support it. The strongest footing available.
- 📊 Correlative — observational or epidemiological data. Suggestive, and genuinely useful for direction, but it cannot establish cause.
- 🧪 Theoretical / mechanistic — the mechanism is understood and often demonstrated in cells or animals, and the human trial doesn’t exist yet. Unproven is not the same as ineffective. Plenty of what’s standard practice today sat here five years ago.
✗ is a safety flag, not a grade. Where you see it, the concern is harm — not a disappointing trial. A compound tested for one purpose and found not to help there can still be worth studying somewhere else, so a negative result never gets rendered as a cross. It sits alongside the tier, because something can be both well-studied and genuinely risky.
My job is to tell you which one you’re looking at, and let you make the call. Grading something low isn’t me dismissing it — it’s me refusing to oversell it. This is the research space, and being able to reason forward from a mechanism matters as much as waiting for the trial.
Genuinely exciting biology and genuinely thin human evidence — the striking results, including improved survival in aged mice, are animal work, and the human trials are small, early and ongoing. Worth watching closely and worth being honest about. Bioavailability is poor without fat. The high-dose intermittent protocols circulating online are extrapolated from rodent dosing rather than established in people, and it has mild antiplatelet activity. Nothing here is settled enough to promise an outcome.
Fisetin — safety & side effects
- Well tolerated in the limited human data; GI upset at high doses.
- The senolytic dosing protocols circulating online come from mouse studies, not human trials — 20 mg/kg for a few days is an extrapolation, not an established human regimen. Human trials are ongoing and not yet reported.
- Antiplatelet activity and CYP inhibition, as with the other flavonoids. Additive bleeding risk with anticoagulants and antiplatelets — warfarin, apixaban, rivaroxaban, clopidogrel, and aspirin at any dose. The interaction is pharmacodynamic rather than metabolic, so it does not show up as a changed drug level; it shows up as bruising, nosebleeds or a raised INR.
- Long-term safety has not been characterised — the trials run weeks to months, not years. That is a real limit on what anyone can tell you about daily use for a decade.
Not medical advice. If you take prescription medication or have a diagnosed condition, check this against it with a pharmacist or doctor — pharmacists are underused and free.
Where to get Fisetin
Find Fisetin on iHerb →Get the complete breakdown for Fisetin — inside the Academy alongside the full interactive Vault.
Unlock in the Academy — $10/mo →Bloodwork to run alongside Fisetin
Run these before you start, and again after 8–12 weeks. A baseline you didn’t take is one you can never go back for.
| Marker | What it’s watching for |
|---|---|
| hs-CRP (High-Sensitivity C-Reactive Protein) | The inflammation these are aimed at |
| ApoB (Apolipoprotein B) | Cardiovascular risk, measured properly |
| HbA1c (Hemoglobin A1c) | Glycation over three months |
| Comprehensive Metabolic Panel (CMP) | Liver and kidney baseline |
The Longevity Baseline panel covers these in one order — 13 markers, $219.10 with the discount applied.
Check results you already have → · All 102 markers A–Z
Fisetin — frequently asked questions
What is Fisetin?
A plant flavonoid and the leading candidate 'senolytic' — a compound that helps clear senescent 'zombie' cells that accumulate with age and drive inflammation.
What is the suggested dose of Fisetin?
Often run as periodic high-dose (e.g., ~1,000–1,500 mg for 2–3 consecutive days monthly); take with fat. This is a general reference for education only — statements have not been evaluated by the FDA and this is not medical advice.
What are the researched benefits of Fisetin?
Human senolytic trials are ONGOING; current evidence is strong in animals (extended healthspan) and mechanistic in humans.
Who is Fisetin for?
Longevity experimenters targeting cellular senescence.
Where can I buy Fisetin?
Coach Cam sources Fisetin from vetted, top-rated brands on iHerb — use the buy link on this page.
Build your foundation with Coach Cam
The full Supplement Vault — 350 products across 14 categories with clinical, correlative & theoretical evidence, plus my Thorne partner links — lives inside the Academy alongside 237 peptides.
Join the Academy — $10/mo →What Fisetin is used for
Fisetin appears under 1 goal in the Vault’s goal router, grouped by the mechanism it works through rather than by how much trial evidence exists. Each link opens that pathway in full, with the alternatives beside it and the bloodwork that tests it.