Product Review
DoNotAge Pure Fisetin Review
5/5 editorial recommendation for a simple, 400 mg plant-derived fisetin capsule with a vegan shell and no fillers. Human longevity benefits remain unproven.
Fisetin, 400 mg per capsule
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DoNotAge Pure Fisetin annual container: 366 capsules, 400 mg per capsule; standalone bottles contain 60 capsules
Read the full editorial assessment
Formulation strengths and limitations
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 recommends 800 mg/day continuously, while most published human senolytic protocols use intermittent higher-dose schedules. No head-to-head trial has established that one strategy is clinically superior.
- The product uses a simple standard HPMC capsule with no fillers. Enhanced-delivery fisetin products exist, but human trials have not established superior clinical outcomes for those formulations.
- DoNotAge currently states that Pure Fisetin is verified through in-house testing and third-party lab testing, with GMP and ISO9001 manufacturing standards and a clean vegan formula.
Formulation
Key facts & composition
View product label| Active ingredient | Fisetin, 400 mg per capsule DoNotAge states its ingredients are verified to a 99.8% purity standard. |
|---|---|
| Dose per capsule | 400 mg |
| Manufacturer's daily serving | 800 mg (2 capsules) Manufacturer label guidance, not an established human senolytic or longevity dose. Follow the current label and seek individual advice when taking medication. |
| Format | Vegan HPMC capsule, no fillers Plant-based capsule shell, free from animal-derived ingredients |
| Sourcing | Plant-derived / naturally sourced fisetin DoNotAge currently describes Pure Fisetin as derived from natural plant sources and selected for stability and purity. |
| Testing status | In-house + third-party testing stated DoNotAge describes in-house checks and third-party lab testing, plus GMP and ISO9001 quality standards. These are manufacturer disclosures; this review does not independently verify the current retail batch. |
| Pack formats | 60-capsule standalone bottle; 366-capsule annual containers At 800 mg/day, a 60-capsule bottle lasts 30 days. The annual 400 mg/day plan uses one 366-capsule container; the 800 mg/day plan uses two. The main image shows the annual container. |
Composition
| Ingredient | Amount | Form | Source |
|---|---|---|---|
| Fisetin | 800 mg (two 400 mg capsules) | Free-form fisetin in a standard capsule, no absorption-enhancing technology | Plant-derived fisetin from natural plant sources, according to DoNotAge. |
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.
How it works
Clearing senescent cells
Calming the inflammatory signals senescent cells release
Defending cells against oxidative stress
Research & evidence
The evidence
Sources include research papers and other cited records, such as registered trials. A trial registration is not a published result.
A Fisetin selectively clears senescent cells in preclinical models Tier 2
B Fisetin reduces inflammatory and oxidative-stress markers Tier 2
C Fisetin supports cognitive and neuroprotective function Tier 3
C Fisetin may support vascular and arterial health with age Tier 3
B Most oral fisetin is absorbed poorly and converted into less-active forms Tier 3
D Confirmed human healthspan or lifespan extension from oral fisetin Tier 4
AFFIRM Trial 2018 (registered trial, not yet peer-reviewed), PROFFi Trial 2023 (registered trial, not yet peer-reviewed), Andersen O 2024 (registered trial, not yet peer-reviewed)
Comparison
How it compares
| DoNotAge 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 |
| Testing transparency | In-house + third-party lab testing stated | Not stated | Third-party testing / certificate availability stated |
| 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 |
| Return policy | 14 days from delivery: full refund unopened; 50% refund if opened with at least 50% remaining. | Satisfaction guarantee stated, no timeframe published | 100 days |
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
DoNotAge Pure Fisetin Supplement — via DoNotAge
- 14-day return policy: Full refund for unopened products returned within 14 days of delivery; 50% refund for opened products with at least 50% remaining. Check the manufacturer's current terms.
- 60-capsule standalone bottle: 30 days at the manufacturer's 800 mg/day serving
- Annual plans use one 366-capsule container at 400 mg/day or two at 800 mg/day, in one yearly shipment. Delivery dates and cancellation can be managed in your account; check current prices and terms at DoNotAge.
- Fast shipping from DoNotAge
DoNotAge handles pricing, fulfilment, and customer support for this product. Biohack Blueprint may earn a commission from purchases made through links on this page, at no extra cost to you. This does not affect our evidence grading or editorial verdict.
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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?
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14-day return policy: Full refund for unopened products returned within 14 days of delivery; 50% refund for opened products with at least 50% remaining. Check the manufacturer's current terms.
Related reading
Fisetin: A Clinician's Guide to Evidence, Dose & Safety
What Is Fisetin? Structure, Sources, and How It Works
Fisetin Benefits: What the Evidence Actually Shows
Fisetin Senolytic: Does It Clear Senescent Cells in Humans?
Fisetin Dosage: What Human Studies Actually Use
How and When to Take Fisetin
Fisetin Pulse Dosing: What Human Trials Actually Use
Fisetin Bioavailability: The Flavonoid Absorption Problem
Liposomal Fisetin: Does the Formulation Actually Matter?
Foods High in Fisetin: Natural Sources Ranked
Fisetin Side Effects and Safety: What the Trials Show (2026)
Fisetin Drug Interactions: What to Watch For (2026)
Fisetin and Blood Pressure: Does It Raise or Lower It?
Fisetin in Pregnancy and Breastfeeding: What We Know (2026)
Fisetin for Dogs and Cats: What Owners Need to Know (2026)
Fisetin vs Quercetin: Which Is Better, and When to Combine (2026)
Fisetin vs Spermidine: Two Different Longevity Bets (2026)
Fisetin vs Urolithin A: Senolytic vs Mitophagy (2026)
Fisetin vs Resveratrol: The Longevity Polyphenol Comparison (2026)
Fisetin vs Apigenin: Senolytic vs CD38 Inhibitor (2026)
Fisetin for Skin: Antioxidant, Senolytic, and Topical
Fisetin for Hair Growth and Grey Hair: The Honest Evidence (2026)
Fisetin for Brain and Cognitive Function: The Evidence (2026)
Fisetin for Muscle Preservation and Frailty: The Evidence (2026)
Fisetin for Inflammation and Joint Pain: The Evidence (2026)
Best Fisetin Supplement (2026): The Complete Buyer's Guide
- Fisetin is a senotherapeutic that extends health and lifespan Read on our Data CenterView on PubMed View on PMC 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 Clinical Trial
- Prevention of Frailty With Fisetin and Exercise in Breast Cancer Survivors (PROFFi) Read on our Data Center Clinical Trial
- Pilot Trial of Fisetin in Healthy Volunteers and Older Patients With Multimorbidity (Fisetin HIGH) Read on our Data Center Clinical Trial
- 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 Clinical Trial
- 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 Clinical Trial
- 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
- Astaxanthin and meclizine extend lifespan in UM-HET3 male mice; fisetin, SG1002 (hydrogen sulfide donor), dimethyl fumarate, mycophenolic acid, and 4-phenylbutyrate do not significantly affect lifespan in either sex at the doses and schedules used Read on our Data CenterView on PubMed View on PMC DOI
- 12-weeks fisetin supplementation and interval resistance with aerobic training: changes in Maresin-1 and inflammatory markers in men with obesity: a randomized controlled trial Read on our Data CenterView on PubMed View on PMC DOI Clinical Trial
- The Effects of Interval Resistance-Aerobic Training and Fisetin Supplementation on Asprosin and Selected Adipokines in Obese Men: A Double-Blind Randomized Control Trial Read on our Data CenterView on PubMed View on PMC DOI Clinical Trial
- 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.
- 21 Sep 2026 Updated manufacturer sourcing and quality statements, and refreshed links to supporting fisetin research and reader guides.
- 27 Sep 2026 Updated to reflect the 120-entry fisetin evidence library and newly indexed 2025 knee-osteoarthritis and 2026 lung-disease conference abstracts. Clarified human trial dosing, supplement safety and uncertainty about meal timing or fat-assisted absorption; refreshed product image descriptions.
- 21 Oct 2026 Clarified 60-capsule and annual pack formats, corrected the composition sourcing statement to plant-derived, and added return conditions from the supplied manufacturer page. Updated the editorial recommendation to 5/5 and explained its scope. Scientific evidence retains its separate verification date.
