An ancient Chinese remedy Contains 6% terpene lactone from the dried leaves of the Ginkgo Biloba tree The Chinese have been using Ginkgo Biloba to treat a variety of conditions for nearly 2800 years. Interestingly, Ginkgo is a prescription herb in Germany. Reflex Nutrition's ginkgo extract (6% terpene lactone) is prepared from the dried leaves of the Ginkgo Biloba tree.