DoNotAge · Senolytics · Physician-reviewed
DoNotAge Pure Fisetin Supplement — Senolytic Dose, Evidence and Verdict
Key takeaways
- Fisetin's senolytic mechanism — selectively clearing senescent cells — is one of the best-replicated actions of any natural compound in this class, though confirmed human trial endpoints are still pending.
- DoNotAge's 800 mg/day continuous dose works out to roughly eight times more total fisetin over a month than the pulsed protocol used in published human trials — a genuinely different dosing philosophy worth understanding.
- The capsule is a standard, non-absorption-enhanced format — fine for most users, but worth knowing if you're comparing against absorption-blend competitor products.
- Manufactured under GMP and ISO 9001-compliant systems with in-house batch testing, but no independently published third-party certificate of analysis.
Bottom line
Pure Fisetin Supplement — via DoNotAge
- 14-day money-back guarantee
- 30 days at the standard 800 mg/day dose (60-capsule bottle) supply per bottle
- Subscribe & save available
- Fast shipping from DoNotAge
DoNotAge handles pricing, fulfilment, and customer support for this product. Our independent editorial oversight is funded, in part, by commission on purchases made through reader links — it does not affect our evidence grading or editorial verdict.
Who this is for
Good fit if you're...
Longevity-focused adults wanting a straightforward high-dose option
If you want a simple, single-ingredient fisetin supplement at a meaningfully high per-capsule dose without juggling several smaller capsules, this fits the brief directly.
People who want a clean, allergen-free capsule
The vegan HPMC capsule with no fillers suits anyone avoiding common allergens or animal-derived ingredients in their supplement stack.
People already buying other DoNotAge longevity supplements
If NMN or Ca-AKG are already part of your routine, adding fisetin from the same manufacturer keeps sourcing and quality standards consistent across your stack.
People who prefer a daily routine over a pulsed schedule
If remembering a once-every-28-days pulsed protocol feels impractical, a straightforward daily capsule is easier to build into a routine — with the trade-off explained in the pharmacology section above.
Probably not for you if...
Those wanting to replicate the exact clinical-trial protocol
Consider waiting and researching a weight-based pulsed protocol instead if your goal is specifically to match the dosing schedule used in published human trials.
Pregnant or breastfeeding women
No human safety data exists for this population, so fisetin supplementation isn't recommended here.
Those specifically seeking an absorption-enhanced formulation
Consider a liposomal or absorption-blend fisetin product instead if maximising bioavailability from the capsule itself is your main priority.
Ready to try it for yourself? Use code BB10 for 10% off Pure Fisetin Supplement on DoNotAge.
Shop on DoNotAge →Key facts & composition
| Active ingredient | Fisetin, 98%+ purity A plant flavonoid naturally found in strawberries, apples, persimmons and cucumbers |
|---|---|
| Dose per capsule | 400 mg |
| Standard daily dose | 800 mg (2 capsules) Taken continuously, every day, per DoNotAge's own instructions |
| Format | Vegan HPMC capsule, no fillers Plant-based capsule shell, free from animal-derived ingredients |
| Sourcing | Chemically synthesised for pharmaceutical-grade consistency Not a plant extract; produced to a standardised purity specification |
| Testing status | In-house batch tested Tested internally under GMP and ISO 9001-compliant systems; a certificate of analysis is available on request |
Composition
| Ingredient | Amount | Form | Source |
|---|---|---|---|
| Fisetin | 800 mg (two 400 mg capsules) | Free-form fisetin in a standard capsule, no absorption-enhancing technology | Synthetic fisetin, standardised for purity rather than plant-extracted |
How it works
Clearing senescent cells
Calming the inflammatory signals senescent cells release
Defending cells against oxidative stress
The evidence
Fisetin selectively clears senescent cells in preclinical models
Tier 2
Yousefzadeh MJ et al. 2018, Tavenier J et al. 2024, Zhang L et al. 2020
Fisetin reduces inflammatory and oxidative-stress markers
Tier 3
Most oral fisetin is absorbed poorly and converted into less-active forms
Tier 3
Shia CS et al. 2009, Touil YS et al. 2011, Ragelle H et al. 2012
Confirmed human healthspan or lifespan extension from oral fisetin
Tier 4
The evidence stacks up. Use code BB10 for 10% off Pure Fisetin Supplement on DoNotAge.
Shop on DoNotAge →How it compares
| Pure Fisetin Supplement | Doctor's Best Fisetin | ProHealth Longevity Fisetin Pro | |
|---|---|---|---|
| Dose per capsule | 400 mg | 100 mg | 125 mg |
| Recommended daily dose | 800 mg, every day (continuous) | 100 mg, every day (continuous) | 125–250 mg, every day (continuous) |
| Absorption-enhancing technology | None — standard capsule | None — standard capsule | Yes — polyphenol/MCT oil absorption blend |
| Certificate of analysis (CoA) | In-house tested; CoA available on request | Not stated | Yes — third-party tested, certificate of analysis available |
| Manufacturing certification | GMP and ISO 9001-compliant | Not stated | FDA-registered, GMP-certified facility |
| Allergen and dietary claims | Vegan, allergen-free, no fillers | Vegan, non-GMO, gluten and soy-free | Free of 10 major allergens, vegetable capsule |
| Money-back guarantee | 14 days (full refund unopened, 50% if opened) | Satisfaction guarantee stated, no timeframe published | 100 days |
One of the strongest evidence profiles in its category. Use code BB10 for 10% off Pure Fisetin Supplement on DoNotAge.
Shop on DoNotAge →Clinical pharmacology
Dose tiers
| Tier | Dose | Frequency | Duration | Notes |
|---|---|---|---|---|
| Starter (400 mg/day) | 400 mg/day (1 capsule) | Once daily | Ongoing, daily | |
| Standard (800 mg/day) | 800 mg/day (2 capsules) | Once daily (both capsules together) | Ongoing, daily |
From bench to bedside
| Pathway | Preclinical finding | Human translation | Confidence |
|---|---|---|---|
| Senolysis (clearing senescent cells) | In mice, fisetin selectively triggers the death of senescent cells across multiple tissues, reducing markers of cellular ageing and, in some models, extending healthy lifespan. | Human trials testing whether the same clearance happens in people — including AFFIRM, PROFFi and the Fisetin HIGH pilot — are underway or recently completed, but full peer-reviewed results confirming senescent-cell clearance in humans are not yet published. | Emerging |
| Inflammatory signalling (SASP suppression) | Cell and animal studies show fisetin lowers NF-κB-driven inflammatory signalling and the broader senescence-associated secretory phenotype. | This mechanism is well established in the lab. Whether daily supplemental fisetin measurably lowers inflammatory markers in healthy or frail older adults over months of use has not yet been directly confirmed in a published human trial. | Emerging |
| Vascular and arterial ageing | In old mice, clearing senescent cells with fisetin restored healthier arterial function, using both drug and genetic approaches to confirm the effect was really down to senescent-cell removal. | This is a single, well-controlled animal study rather than a replicated finding, and no human vascular-function trial of oral fisetin has yet reported results. | Early |
Drug interactions
None formally established
No clinically significant drug interaction has been confirmed for fisetin in human studies to date. As a flavonoid, it is theoretically plausible fisetin could affect drug-metabolising enzymes or platelet function at high doses, but this hasn't been directly shown in people.
Recommendation:
Bioavailability tips
Special populations
| Population | Recommendation | Rationale |
|---|---|---|
| Pregnancy and breastfeeding | Not recommended | |
| People taking blood-thinning medication | Speak to your doctor before starting | |
| Frail older adults with multiple health conditions | Best used with medical guidance |
Therapeutic positioning
Quercetin + Dasatinib (D+Q)
Quercetin (alone)
NAD+ precursors (NMN, NR)
Caloric restriction and fasting-mimicking diets
About buying through us
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Reader questions
What is fisetin and where does it come from?
How much fisetin should I take, and how do I take it?
Is fisetin safe to take every day, or only in pulses?
Can I take fisetin with other supplements or medication?
How long does it take before fisetin starts working?
Related reading
Fisetin: A Clinician's Guide to Evidence, Dose & Safety
Fisetin Benefits: What the Evidence Actually Shows
Fisetin as a Senolytic: Evidence, Biology, Human Data
Fisetin Dosage: Trial-Validated Dose vs Marketing
Fisetin Bioavailability: The Flavonoid Absorption Problem
Fisetin Side Effects and Safety: What the Trials Show (2026)
- Fisetin is a senotherapeutic that extends health and lifespan Read on our Data CenterView on PubMed DOI
- Fisetin as a senotherapeutic agent — evidence and perspectives for age-related diseases Read on our Data CenterView on PubMed DOI
- Targeting Cellular Senescence with Liposome-Encapsulated Fisetin: Evidence of Senomorphic Effect Read on our Data CenterView on PubMed View on PMC DOI
- Fisetin Alleviated Bleomycin-Induced Pulmonary Fibrosis Partly by Rescuing Alveolar Epithelial Cells From Senescence Read on our Data CenterView on PubMed View on PMC DOI
- Alleviation by Fisetin of Frailty, Inflammation, and Related Measures in Older Women (AFFIRM) Read on our Data Center DOI
- Prevention of Frailty With Fisetin and Exercise in Breast Cancer Survivors (PROFFi) Read on our Data CenterView on PubMed View on PMC DOI
- Pilot Trial of Fisetin in Healthy Volunteers and Older Patients With Multimorbidity (Fisetin HIGH) Read on our Data CenterView on PubMed View on PMC DOI
- Enhanced bioavailability and pharmacokinetics of a novel hybrid-hydrogel formulation of fisetin orally administered in healthy individuals: a randomised double-blinded comparative crossover study Read on our Data CenterView on PubMed View on PMC DOI
- Fisetin for COVID-19 in skilled nursing facilities: Senolytic trials in the COVID era Read on our Data CenterView on PubMed View on PMC DOI
- Intermittent supplementation with fisetin improves arterial function in old mice by decreasing cellular senescence Read on our Data CenterView on PubMed View on PMC DOI
- Modulation of multiple pathways involved in the maintenance of neuronal function during aging by fisetin Read on our Data CenterView on PubMed View on PMC DOI
- Dietary flavonoid fisetin regulates aluminium chloride-induced neuronal apoptosis in cortex and hippocampus of mice brain Read on our Data CenterView on PubMed DOI
- Metabolism and pharmacokinetics of 3,3',4',7-tetrahydroxyflavone (fisetin), 5-hydroxyflavone, and 7-hydroxyflavone and antihemolysis effects of fisetin and its serum metabolites Read on our Data CenterView on PubMed DOI
- Japanese intake of flavonoids and isoflavonoids from foods Read on our Data CenterView on PubMed DOI
- Nanoemulsion formulation of fisetin improves bioavailability and antitumour activity in mice Read on our Data CenterView on PubMed DOI
- Fisetin disposition and metabolism in mice: Identification of geraldol as an active metabolite Read on our Data CenterView on PubMed DOI
- Inhibition of c-Jun N-terminal kinase and nuclear factor κ B pathways mediates fisetin-exerted anti-inflammatory activity in lipopolysaccharide-treated RAW264.7 cells Read on our Data CenterView on PubMed DOI
- Fisetin Promotes Hair Growth by Augmenting TERT Expression Read on our Data CenterView on PubMed View on PMC DOI
- New Perspectives for Fisetin Read on our Data CenterView on PubMed View on PMC DOI
- Intermittent Supplementation With Fisetin Improves Physical Function and Decreases Cellular Senescence in Skeletal Muscle With Aging: A Comparison to Genetic Clearance of Senescent Cells and Synthetic Senolytic Approaches Read on our Data CenterView on PubMed View on PMC DOI
- 2 Sep 2026 Initial publication: full physician review with 20 cited papers, evidence grading, live-verified comparison against Doctor's Best Fisetin and ProHealth Longevity Fisetin Pro.
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