Dietary Supplement 95% Polyphenols Natural Antioxidant Protection Suitable for Vegetarians Purity & Potency Guaranteed GrapeSeedRich 100 mg capsules contain a standardized extract providing no less than 95% Polyphenols (natural polyphenol flavonoids). The result is a leading-edge antioxidant with optimal potency and purity. Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada.