Various studies from around the world indicate ginkgo biloba extract improves the natural blood flow of oxygen to the brain for improved memory and concentration. 21st century's strict adherence to high quality ensures only the finest ginkgo biloba extract containing ginkgo flavone 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. No added sugar, salt, yeast, preservatives, artificial flavors or colors. 100 Percent vegetarian formula. These statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure or prevent any disease.