Source: Examine.com — Resveratrol — 150–500 mg/day across metabolic and vascular studies.
A polyphenol antioxidant from grapes, famous from the 'red wine' longevity research.
Activates sirtuins and AMPK, pathways linked to metabolic health and aging.
Safe; high doses can cause GI upset. Poorly absorbed on its own — human benefits are less clear-cut than the hype.
| Per serving | |
|---|---|
| Typical branded single-ingredient product | $0.67 |
| Bulk powder at the clinical dose (50g 98%, $29.97) | $0.30 |
Buying bulk powder instead of a branded bottle saves about 55% per serving.
Bulk price: $29.97/50g → Alt source: $14.99/30gEducational only — not medical advice. Grades and clinical doses are computed from public labels against sourced research (citations on the main site); prices last verified 2026-07-21. Expensive Powder has no sponsors; bulk links may earn an affiliate commission, which never affects a grade. Talk to a clinician before starting any supplement.