Source Naturals Ginkgo-24™
Ginkgo-24™ is a standardized concentration of prime quality Ginkgo biloba leaves. The extraction yields 24% ginkgo flavoneglycosides (the key nutrients) from a 50 to 1 concentration. The Ginkgo biloba tree has survived for over 200 million years, virtually unchanged -- the Earth''s oldest living species of tree. Ginkgo biloba is the subject of extensive scientific research, and is used worldwide as a nutritional supplement.