Ginkgo

Ginkgo (Ginkgo biloba) is the most commonly ingested herb for cognitive enhancement, or to alleviate cognitive decline. However, fresh (raw) ginkgo seeds contain large amounts of a chemical called ginkgotoxin, which can cause serious adverse reactions—even seizures and death.

Traditional Chinese Medicine (TCM)
Primary uses in TCM include: Preserves Lungs, stops wheezing, eliminates dampness, astringes discharge