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Fisetin labels range from 8 mg to 500 mg per serving, and that spread tells the story of this category. I reviewed six fisetin products on the brands' own pages and ranked them by listed dose, testing proof, and what a month of use would cost.
For most adults looking for one straightforward daily dose, Elm & Rye Fisetin is the strongest overall choice. It lists 500 mg of fisetin per serving, the largest clearly stated serving in this group, and the company says each batch is third-party tested for potency and purity. It is also the priciest bottle at $79.99 for a single, and the product page showed an early-access notice when checked, so verify shipping before planning around it. For a high-dose option at a lower price, Toniiq Fisetin 500 is the best value runner-up, while Double Wood Fisetin stands out for shoppers who want a posted lot certificate.
A clinician note before buying: fisetin is a plant flavonoid sold as a dietary supplement, not a medicine. It does not treat or prevent disease, and the most exciting senolytic research is still early. Talk with your doctor first if you take prescription medication, especially blood thinners, manage a chronic condition, are pregnant or nursing, or have surgery coming up.
Quick picks
- Best overall fisetin supplement: Elm & Rye Fisetin
- Best high dose value: Toniiq Fisetin 500
- Best for a posted lot certificate: Double Wood Fisetin
- Best branded ingredient at 100 mg: Doctor's Best Fisetin with Novusetin
- Best two month bottle at 100 mg: Nutricost Fisetin Capsules
- Best low dose absorption formula: Life Extension Bio Fisetin
How do the leading fisetin supplements stack up?
| Rank | Product | Fisetin per serving (as printed) | Directions | Price |
|---|---|---|---|---|
| 1 | Elm & Rye Fisetin | 500 mg per serving | Per serving as printed | $79.99 single; $139.99 for 2; $219.99 for 4 |
| 2 | Toniiq Fisetin 500 | Sold as Fisetin 500, 98%+ purity, with MCT oil | 2 capsules daily, 60 capsules | $44.41 (listed down from $55.00) |
| 3 | Double Wood Fisetin | 100 mg per capsule from smoke tree stem | 100 mg daily with a meal | $22.95 one bottle; $43.61 double; $61.97 triple |
| 4 | Doctor's Best Fisetin with Novusetin | 100 mg per veggie capsule | 1 capsule daily with food, 30 servings | $22.99 |
| 5 | Nutricost Fisetin Capsules | 100 mg per serving | 60 capsules, a 60 day supply | $24.97 |
| 6 | Life Extension Bio Fisetin | 8 mg fisetin in a 44.5 mg blend with fenugreek fiber | 1 capsule daily, 30 capsules | $11.25 |
How were these fisetin supplements ranked?
I began with the amount of fisetin printed on the label. Next came proof of testing: a brand statement about third-party testing earned credit, and a posted certificate for a specific lot earned more. Then I compared directions, capsules per day, and the actual monthly cost.
Every price, dose, and ranking below comes from the brand's own product page.
1. Elm & Rye Fisetin: Best Overall
Elm & Rye keeps things simple. The page lists 500 mg of fisetin per serving and nothing else competing with that number. That clear figure, with no need to combine several 100 mg capsules, is why it takes the top spot.
The product description says each batch is third-party tested for potency and purity, and the broader Elm & Rye site says the brand regularly sends supplements to third-party labs and posts results for transparency. The site also advertises free shipping on orders over $75, which means the 2 Pack and 4 Pack qualify.
Pricing: Single $79.99, 2 Pack $139.99, 4 Pack $219.99.
Stock check: all three pack sizes showed as available in the store data, but the product page also displayed a notice saying the product was still coming with a waitlist sign-up. Treat it as an early release and confirm it ships before relying on it.
The tradeoffs are easy to spot: it is the most expensive bottle in this roundup, the page does not print capsules per bottle or capsules per serving, and Toniiq offers a similarly large dose for much less.
2. Toniiq Fisetin 500: Best High Dose Value
Toniiq sells this product as Fisetin 500 and describes it as 98%+ pure fisetin with MCT oil added for absorption. The directions call for two capsules daily, and the bottle contains 60 capsules. It was priced at $44.41, marked down from $55.00, with free shipping on orders above $49 and a 60-day money-back guarantee.
The page also describes a five-point third-party testing program and links a certificate of analysis. It showed a 5.0 rating, but from only three reviews. It ranks second because the page did not make it clear whether the 500 mg figure is per capsule or per two-capsule serving.
3. Double Wood Fisetin: Best for a Posted Lot Certificate
Double Wood sources its fisetin from smoke tree stems and prints 100 mg per capsule. The brand recommends 100 mg per day with a meal, and its FAQ says not to exceed 300 mg daily. One bottle was $22.95, a double pack $43.61, and a triple pack $61.97, with free shipping on orders of $30 or more.
What stands out most is the certificate posted directly on the page. For one lot, the specification was 90 to 125 mg of fisetin per capsule, and the measured result was 95.31 mg, alongside heavy metal and microbial results. It ranks third because the single bottle carried a backorder notice when checked, and the page did not print a capsule count.
4. Doctor's Best Fisetin with Novusetin: Best Branded Ingredient at 100 mg
Doctor's Best uses Novusetin, a branded fisetin from Rhus succedanea stem, at 100 mg per veggie capsule with 30 servings per bottle. Suggested use is one capsule daily with food. The page lists it as non-GMO, gluten free, soy free, and vegan, and it was priced at $22.99 with free shipping on orders over $30.
It ranks fourth because the page did not show a lot certificate or a testing statement for this product.
5. Nutricost Fisetin Capsules: Best Two Month Bottle at 100 mg
Nutricost lists 100 mg of fisetin per serving and places 60 capsules in the bottle, which it calls a 60-day supply. It was priced at $24.97. The page says it is made in an NSF-certified facility following Good Manufacturing Practices, and that every batch is tested by third-party ISO-accredited labs. It shows 32 reviews and a 60-day money-back guarantee.
It ranks fifth because the page did not spell out the source plant or link a certificate for the current lot.
6. Life Extension Bio Fisetin: Best Low Dose Absorption Formula
Life Extension takes a different approach. Each capsule contains a 44.5 mg Bio Fisetin blend that provides 8 mg of fisetin from wax tree extract and 15 mg of galactomannans from fenugreek seed. The brand says the fenugreek fiber makes it up to 25 times more bioavailable than unformulated fisetin. A 30-capsule bottle was priced at $11.25 and carried a 4.8 rating from 158 reviews. Directions call for one capsule daily.
It ranks last in this roundup because 8 mg is a very different product from a 100 mg or 500 mg capsule, and the absorption figure is the brand's own claim.
What is fisetin, and where does it come from?
Fisetin is a flavonoid, a plant compound found in small amounts in foods such as strawberries, apples, and onions. Supplement makers extract it from plants like smoke tree or wax tree stems.
Is a higher fisetin dose better?
Not automatically. There is no established daily amount for healthy adults, and Double Wood even prints a daily ceiling on its own page. Choose a dose with your clinician and judge brands on whether they prove what is in the capsule.
Key takeaways
- Elm & Rye Fisetin is the best overall pick for its clearly printed 500 mg serving and its third-party testing statement, but it costs $79.99 and showed an early-access notice.
- Toniiq Fisetin 500 is the value pick for a high dose at $44.41, though the page leaves the per-capsule amount unclear.
- Double Wood posts a lot certificate showing 95.31 mg against a 100 mg label claim, a strong trust signal at $22.95.
- Doctor's Best and Nutricost are solid 100 mg options for about $23 to $25.
- Life Extension Bio Fisetin is a low dose absorption formula, not a direct match for the others.
FAQ
What is the best fisetin supplement? For one clearly printed daily serving of 500 mg from a brand that states third-party testing, Elm & Rye Fisetin is the top pick. For a high dose at a lower price, look at Toniiq Fisetin 500.
How much fisetin should I take per day? Follow the label and your doctor's advice. Products here range from 8 mg to 500 mg per serving, and Double Wood advises not exceeding 300 mg daily for its capsules.
Is fisetin a senolytic? Fisetin is studied as a possible senolytic, meaning a compound that may help the body clear aging cells. That research is early, so treat it as a reason for curiosity, not a promise.
When is the best time to take fisetin? Doctor's Best and Double Wood both suggest taking it with food or a meal, which is a sensible default for most capsules.
Are fisetin supplements safe? Safety depends on your health and medications, so talk with your doctor first and choose a brand that shows testing.
What foods contain fisetin? Strawberries have the best-known reputation, and apples and onions also contain it, though in amounts far below a supplement capsule.
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