24% Standardized Extract NOW Gingko Biloba Extract is standardized to min. 24% ginkgoflavonglycosides and 6% terpene lactones. The extract comes from the leaves of the famous Ginkgo tree with its dynamic history of populating the earth for millions of years. Natural color variation may occur in this product. 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. Results may vary. Consult your healthcare provider before starting any supplement regimen.