Nature's Way standardised Olive Leaf is a scientifically and technically advanced premium herbal extract standardised to 12% oleuropein, synergistically supported by olive leaf whole herb. Olive leaf herb has long been used for general well being and has been the focus of research since the 1800s. Oleuropein, the bitter glycoside found in the leaves, has been identified as a key constituent that provides immune supportive and cardiotonic benefits. For the support of the bodys ability to fight off infection. Best taken at the first sign of winter ills and chills to support the speedy return to normal health. May also support an anti candida program and cardiovascular health.