300 mg Extract per capsule. 0.6% Macamides and Macaenes. Nature's Herbs Maca Root Extract (Maca-Power™) is the highest quality most potent and most effective form of Maca Extract available. Standardized for 0.6% Macamides and Macaenes Maca-Power offers all the naturally balanced active principles while retaining and enhancing all the whole-plant synergistic benefits thus making it not only one of the world's finest and purest plant extracts but also faster-acting and more assimilable than unconcentrated Maca. Their exclusive FRESHCARE™ SYSTEM inhibits normal plant oxidation maintaining product potency and extending freshness. It includes all-natural antioxidants in each capsule oxygen-absorbing packets in each bottle special air-tight seals and amber glass packaging for uncompromised quality. CERTIFIED POTENCY® symbol is your guarantee of dependable consistent quality and potency in every capsule every time! Only from Nature's Herbs.