Evidence-graded · All categories
Updated 2026-06-14 · Data sourced from ClinicalTrials.gov and PubMed
The longevity supplement market is worth $50B+ and growing. Most of it is backed by marketing, not clinical evidence. Here we rank the longevity supplements with the strongest human RCT data — categorized by mechanism, graded by evidence quality, and honest about what is still uncertain.
This list prioritizes supplements where the human evidence for longevity-relevant outcomes (not just biomarker changes) is meaningful. We exclude supplements that only have animal or in vitro data, and we flag where evidence is limited.
Best metabolic longevity compound with human evidence
confidence
500+ registered trials. Grade A for blood glucose and lipids. AMPK activator equivalent to low-dose metformin in several head-to-head trials. $0.20/day — the most cost-effective evidence-backed longevity compound.
Full Berberine evidence →Best stress-longevity compound — cortisol, muscle, testosterone
confidence
Grade A for cortisol reduction, Grade B for muscle strength and testosterone. Chronic cortisol elevation accelerates biological aging — ashwagandha addresses this mechanistically and has 50+ RCTs.
Full Ashwagandha (KSM-66) evidence →Best mitochondrial supplement with cardiac evidence — Grade A for heart failure
confidence
521 registered trials. Grade A for heart failure outcomes (Q-SYMBIO trial). Declines with age and statin use. Choose ubiquinol over ubiquinone over age 40.
Full CoQ10 (Ubiquinol) evidence →Most widely deficient micronutrient with broad aging relevance
confidence
2,000+ trials. A cofactor in ATP metabolism, DNA repair, and neuromuscular function. 45–50% of Western adults are sub-optimal. Magnesium glycinate or threonate for best absorption.
Full Magnesium evidence →Best NRF2 activator — the most potent food-derived longevity compound per gram
confidence
Grade A for NRF2 induction (antioxidant enzyme system). The most potent dietary activator of cellular stress resistance. Get it from 3-day broccoli sprouts (raw) or standardized extract with active myrosinase.
Full Sulforaphane evidence →Best-evidenced anti-inflammatory supplement with 5,000+ trials
confidence
The most-trialed supplement in existence. Grade A for triglycerides, Grade B for cardiovascular events. Recent VITAL trial showed 28% reduction in cardiovascular mortality. 1–4g EPA+DHA/day, triglyceride-form preferred.
Full Omega-3 (EPA/DHA) evidence →Most exciting longevity mechanism — human evidence still accumulating
confidence
NAD+ declines 50% by age 60. NMN and NR restore it in human blood. Muscle endurance and metabolic effects are emerging. Evidence trajectory is strong but definitive longevity proof in humans is pending.
Full NMN / NR (NAD+ Precursors) evidence →Evidence collection
See all ingredients in this category with full evidence profiles
Browse the full collection →Frequently asked questions
It depends on your baseline. If you have metabolic issues (blood sugar, lipids), berberine. If you're stressed and sleep poorly, ashwagandha. If you're generally healthy and want broad coverage, magnesium + omega-3 + CoQ10 (if over 40) is the best-evidenced foundation stack. NMN/NR are worth adding once the basics are covered.
Omega-3 (5,000+ trials), magnesium (2,000+), CoQ10 (500+), berberine (500+), and ashwagandha (50+) are the clear leaders. NMN and NR are rapidly accumulating trials from 10+ in 2020 to 40+ now.
They have stronger longevity evidence in animal models, and metformin has a large human epidemiological evidence base. However, they require prescriptions, carry meaningful side effects, and are not appropriate for healthy people without medical supervision. The TAME trial (metformin for aging) is ongoing. For healthy individuals, evidence-based supplements are the appropriate starting point.
Ask three questions: (1) Does it have human RCTs, not just animal studies? (2) Is the dose you're taking close to what was used in trials? (3) Is the form you're buying standardized to active compounds? Our ingredient evidence library answers all three for every compound we track.
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Informational only — not medical advice. Trial counts reflect ClinicalTrials.gov registry matches and PubMed publication-type filters and include all endpoints, not only longevity endpoints. Evidence grades are editorial assessments. See each ingredient page for sources.