Herbal supplement. Supports mental acuity. Formulated by Michael Tierra, L.Ac., O.M.D. Ginkgo is one of the most widely researched herbs and is known for its ability to support mental acuity. Planetary Herbals Ginkgo OptiMem 120 is a concentrated standardized extract yielding 24% ginkgo flavoneglycosides and 6% terpene lactones, the same constituent profile used in research studies. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)