Olive Leaf Extract supports several circulatory needs, including maintaining blood pressure levels already within the normal range and maintaining arteries by providing free radical protection against LDL (bad cholesterol). In addition, olive leaf may possess antimicrobial properties. Olive Leaf Extract is a natural way to support both the Immune System and Circulatory System. It specifically enhances the Immune System with its powerful neutralizing constituents, without harming beneficial bacteria. NSP"s Olive Leaf Extract is standardized to 12% oleuropein, the key active ingredient. Take 1-3 capsules daily with meals.