... source]Dried leaves of Ginkgo biloba L.[Biogenic origin] It is mainly produced in jiangsu, Shandong, Guangxi, Hubei, Henan, Zhejiang, ... ] It is harvested when leaves is still green in the Autumn,drying in time.[Active ingredient]Ginkgo Flavonodies Glycosides, Total Terpene Lacotones ... Ginkgo Flavonodies Glycosides 24-27%,Total Terpene Lacotones 5.4-12%,Acid <5ppm,Ginkgolide A+B+C 2.8-6.2%,Bilobalide 2 ...