Jamieson ginkgo biloba a potent antioxidant, ginkgo biloba improves blood and oxygen flow to the brain and extremities while supporting memory function and mental sharpness. It improves circulation throughout the body and prevents the development of age-related mental and cerebral symptoms and conditions, lessening the severity of memory loss, vertigo, senility and vigilance. Ginkgo biloba is clinically assayed at jamieson laboratories and is Japanese-source material-standardized to mature-leaf material, supplying 24 percent flavone glycosides and 6 percent terpene lactones. Our strict quality control and testing standards ensure that you get the same amount of active compound in every capsule.