What Does Ginkgo Biloba 50:1 Do? Jarrow Formulas Ginkgo Biloba is a 50:1 leaf extract standardized to 24% ginkgoflavonglycosides (or heterosides) and a minimum of 6% terpene lactones. Ginkgo Biloba has a wide range of beneficial effects, including circulatory and antioxidant support.
