Herbal Supplement. Nervous system. Clarity. Promotes good blood circulation & enhances memory & concentration. Gluten free. Dry herb/menstruum ratio: 1:5. We prepare our ginkgo extract from the leaves of ginkgo biloba trees which are certified organically grown. To assure optimal extraction of ginkgo’s bioactive compounds, the leaves are hand-harvested in autumn when ginkgo’s bioactive compounds are at their optimal concentration. www.herb-pharm.com. (This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.)