Jamieson Ginkgo Biloba is a one-a-day formula that helps improve blood and oxygen circulation to the brain and extremities, and enhances memory and mental sharpness. Clinically assayed at Jamieson Laboratories to be Japanese source material standardized to mature leaf material, supplying 24% flavone glycosides and 6% terpene lactones. This ensures you get the same amount of active compound in every capsule taken. NO salt (NaCl), sugar, starch, gluten, lactose, artificial colours, flavours or preservatives.