Herbal Extract 100% Vegetarian Formula Maximum Strength Formula to Improve Memory, Concentration & Mental Performance Dietary SupplementVarious studies from around the world indicate Ginkgo Biloba Extract improves the natural blood flow of oxygen to the brain to support healthy memory and concentration. 21st Century"s strict adherence to high quality ensures only the finest ginkgo biloba extract containing ginkgo flavon glycosides and terpene lactones is used in the manufacturing of this product. 21st Century"s standardized herbal extracts are thoroughly tested to assure specific levels of the important active ingredients are present for maximum benefit.