Item# HEGTEP028G All natural green tea extract (Camellia sinensis L.) standardized for 50% polyphenols imported from China. Certificate of analysis: Polyphenols: 52.01% EGCG: 39.35% Catechins: 18.82% Caffeine: 4.39% Ash: <5% Measures: Size O capsule: holds approximately 390 mg of green tea extract Size OO capsule: holds approximately 446 mg of green tea extract Please note that this is pure bulk powder and does not include capsules. Capsule measurements are given for information purposes only. Capsules may be ordered separately here: http://flowingvisions.ecrater.com/c/619520/herbal-supplies