Antioxidants are essential for good health and are found in high concentrations in foods of the vegetable kingdom. Certain plant foods and herbs are particularly high in extremely powerful antioxidants. Jameth Sheridan has assembled some of the most powerful known antioxidants in Antioxidant Extreme: Quebracho Bark Extract (50% resveratrol) 500mg, Quebracho Whole Bark 850mg, Resveratrol: Extract (50% Resveratrol) 500mg, Resveratrol: Whole Food (Polygonum) 250mg, Acai Extract (2% Anthocyanidins), Green Tea Extract (90% polyphenols, 40% EGCG), French Grape Extract (95% Proanthocyanidins), Pine Bark Extract (95% OPCs), Berry Extracts: (Strawberry, Pomegranate, Grape, Blueberry, Blackberry, Cranberry), Mangosteen Extract (30:1), Acai Extract (2% Anthocyanidins), Goji Berry Extract (20% Polyphenols)