Olive Leaf, used for thousands of years throughout Asia, is revered for its broad array of natural benefits. Nature's Plus Herbal Actives Olive Leaf extract is uniformly standardized to a minimum of 6% (15 mg) oleuropein. Each capsule, providing the greatest concentration of active botanical principles, maximizes the synergistic benefits of the whole leaf, which naturally contains calcium elenolate and numerous phytonutrients.