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Urolithin A went from an obscure gut metabolite to one of the most talked-about longevity ingredients in about three years — and predictably, the supplement aisle filled up fast. Most of what’s sold as “urolithin A” is underdosed, mislabeled, or just pomegranate extract hoping you won’t read the label.
We work alongside licensed clinicians, so we read these labels the way a pharmacist would: dose first, source second, marketing last. Here’s what’s actually worth your money in 2026, and what to skip.
The short answer
- Best overall: Timeline Mitopure — the only urolithin A most of the human clinical research was actually run on, standardized to a clinically studied 500 mg dose. Check current price
- Best for skin & aging-well stacks: Timeline’s Mitopure + skin bundle, if you want the topical alongside the capsules.
- Skip: generic “pomegranate complex” capsules that claim urolithin A on the front but list only ellagic acid or pomegranate extract on the back.
What urolithin A actually is (in plain English)
You don’t eat urolithin A. You eat ellagitannins — compounds in pomegranates, walnuts, and some berries — and your gut bacteria convert them into urolithin A.
The catch: research suggests only about a third to 40% of people have the gut bacteria to make a meaningful amount of it. That gap is the entire reason a direct urolithin A supplement exists — it skips the conversion lottery and delivers the finished compound.
What does it do? The most-studied mechanism is mitophagy — your cells’ process for clearing out worn-out mitochondria. Mitophagy slows with age, and the leading research has looked at whether urolithin A can support it, with downstream effects studied in muscle strength and endurance in older adults.
Honest framing: this is a promising longevity ingredient with real human data behind it — not a miracle. Treat it as a long-game compound, not a pre-workout.
How we evaluated them
- Dose that matches the research. The pivotal human studies used 500 mg/day. Anything well below that is guessing.
- Is it actually urolithin A — or a precursor? Real urolithin A says “urolithin A” in the supplement facts, with a milligram amount.
- Purity & third-party testing.
- Transparency. A brand willing to fund and publish human trials on its own ingredient is putting its money where its label is.
The recommendations
Timeline Mitopure — Best overall
Why it wins: Mitopure is the branded urolithin A that the bulk of the human clinical research was actually conducted on — the studied ingredient at the studied dose (500 mg), not a look-alike.
- Clinically studied 500 mg dose
- The ingredient behind the published human trials
- High-purity (no need to win the gut-bacteria lottery)
- Premium price — the “buy it once, buy it right” option
Check current price on Timeline
The “I want it cheaper” reality check
There are lower-priced urolithin A capsules on the big marketplaces. Some are legitimate; many are pomegranate extract relabeled, underdosed, or unverified. Confirm the supplement facts list “urolithin A” with a milligram amount — if a product won’t tell you the urolithin A milligrams, that silence is your answer.
What to skip
- “Pomegranate super-antioxidant” capsules that imply urolithin A benefits but contain only ellagic acid/extract.
- Anything under ~250 mg of actual urolithin A.
- Products with no dose disclosure or no testing.
How to take it
- Dose: the studied amount is 500 mg/day. Consistency matters more than timing.
- Timeline: give it 8–12 weeks. This is a cellular-level compound, not a stimulant.
- Stacking: it pairs naturally with the basics of an aging-well routine — protein + resistance training, sleep, and a sensible skincare regimen.
Bottom line
If you want urolithin A done right, Timeline Mitopure is the straightforward pick: the studied ingredient, the studied dose, no guessing about whether your gut will convert a precursor.
See current Timeline Mitopure pricing
This article is for general educational purposes and reflects the published research and our editorial opinion as of 2026. It is not medical advice, and these statements have not been evaluated by the FDA. Always consult a qualified healthcare provider before starting any new supplement.
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