Ginkgo Biloba is the worlds oldest living species of tree, also known as the maidenhair. Individual trees live as long as 1, 000 years. Ginkgo grows most predominantly in the southern & eastern United States, southern France, China, & Korea. The leaves of the tree are used in modern herbal medicine. The medical benefits of Ginkgo Biloba extract are attributed primarily to two groups of active constituents: the ginkgo flavone glycosides & the terpene lactones. Ginkgo flavone glycosides, which typically make up Approx. 24% of the extract, are primarily responsible for ginkgos antioxidant activity. Pharmacy 2U Gingko Biloba has a powerful antioxidant activity which helps to maintain the bodys natural defence againist free radicals. Will also help to maintain normal blood circulation & cardiovascular function.