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Supports Mental AcuityHerbal Supplement Approved by Michael Tierra L.Ac O.M.DGinkgo 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 g concentrated standardized extract yielding 24% ginkgo flavone glycosides and 6% terpene lactones the same constituent profile used in research studies.