USDA Dietary Supplement Super Pure Certified by Oregon Tilth SuperPure Resveratrol is the first truly certified , fully standardized extract of its kind - developed exclusively by The Synergy Company. Just one capsule daily provides 100 mg of Trans-Resveratrol and 150 mg of Polyphenols. Derived exclusively from Japanese knotweed and red wine grape skins, our whole-spectrum SuperPure Resveratrol is a true antioxidant powerhouse to support your healthy aging, balanced metabolism & blood sugar, heart health, radiant skin, and much more.