Herbal supplement. Certified potency. Standardized extract. 6% Oleuropein. Certified Potency Olive Leaf Extract (Olive Leaf-Power) is the highest quality and most potent and most effective form of olive leaf extract available. Standardized for 6% Oleuropein, Olive Leaf Extracts offer all the naturally-balanced active principles while retaining and enhancing the all of 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 olive leaf oil. Certified potency is your guarantee of dependable consistent quality and potency in every capsule every time! Only from Nature's Herbs. Our 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.