Supports Brain Health 24% Standardized Extract With Eleuthero Root Non-GMO Project Verified A Dietary Supplement Vegetarian/Vegan Kosher Botanicals/Herbs Family Owned Since 1968 GMP Quality Assured Halal 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. This double strength product has twice the Ginkgo (120 mg) as in our regular strength product (60 mg).