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Nicotinamide riboside (250 mg) + pterostilbene (50 mg)

Photo: HealthVetted editorial render
Urolithin A (Mitopure), 500 mg/day
| # | Product | Active ingredient | Starting price | FDA status | Score | |
|---|---|---|---|---|---|---|
| 1 | Elysium Basis | Nicotinamide riboside (250 mg) + pterostilbene (50 mg) | Best ·$50/mo | supplement | Top ·7.5 | See offer → |
| 2 | Timeline Mitopure (Urolithin A) | Urolithin A (Mitopure), 500 mg/day | $95/mo | supplement | 7.3 | See offer → |
Each two-capsule serving delivers 250 mg of nicotinamide riboside, a vitamin B3 form the body converts into NAD+, a coenzyme essential to mitochondrial energy production and DNA repair that naturally declines with age. The 50 mg of pterostilbene is included as a polyphenol intended to support sirtuin signaling pathways tied to cellular stress response.
Urolithin A is a metabolite your gut bacteria make from ellagitannins in pomegranate and berries, though many people produce little of it. Each 500 mg daily dose of Mitopure delivers a standardized, bioavailable form that triggers mitophagy, the cellular process of recycling damaged mitochondria, which helps muscle cells preserve mitochondrial quality and energy output as they age.
In an 8-week randomized, double-blind, placebo-controlled trial of 120 healthy adults aged 60-80 published in npj Aging and Mechanisms of Disease, the recommended dose raised whole-blood NAD+ by roughly 40% versus placebo (and ~90% at double dose), sustained over the study period with no serious adverse events. The evidence establishes that Basis reliably increases NAD+; it does not yet demonstrate clinical longevity or disease outcomes.
Randomized, double-blind, placebo-controlled trials published in Cell Reports Medicine (2022, middle-aged adults) and JAMA Network Open (2022, older adults) found that 500 mg/day Urolithin A improved muscle strength (around 12% in one trial), exercise endurance, and biomarkers of mitochondrial health versus placebo. The evidence is strongest for muscle and mitochondrial function; it does not demonstrate extended lifespan in humans.
Generally well tolerated; the published trial reported no serious adverse events. Mild, infrequent effects can include nausea, headache, or warmth/flushing typical of the niacin family. Stop and consult a clinician if you notice an unexpected reaction.
Across 25+ human studies Mitopure has shown a strong safety profile and holds FDA GRAS status. Infrequent effects can include mild digestive discomfort or nausea. Stop and consult a clinician if you experience an unexpected reaction.
As of 2026, $50/month on subscription or $65 for a one-time 30-day pouch directly from Elysium; prepaid annual plans reduce the per-month cost. Not covered by insurance.
As of 2026, roughly $85-$95/month on longer subscriptions, $112.50/month on a basic monthly plan, or $125 for a one-time 30-day softgel bottle from Timeline. Powder and gummy formats are also sold. Not covered by insurance.
Marketed to healthy adults seeking cellular-aging support. Not intended for anyone who is pregnant or breastfeeding, and people with liver conditions or on prescription medications should consult a clinician first. This is educational information, not medical advice.
Marketed to healthy adults, particularly those focused on muscle and mitochondrial health with age. Not intended for those pregnant or breastfeeding; consult a clinician if you have a medical condition or take medications. This is educational information, not medical advice.
Timeline Mitopure (Urolithin A): Mitopure is the most clinically validated product in the longevity supplement aisle, with several randomized trials on the exact compound. It is also one of the most expensive, and the proven benefits are about muscle and mitochondrial function, not extending lifespan. Both are strong options — match the pick to your specific needs, budget, and clinician's guidance.
Editorial comparison, not medical advice. Discuss options with a qualified clinician. Individual results vary.