Ginkgo biloba, or ginkgo biloba leaf extract ... has shown taking 120 to 160 milligrams (mg) two times daily, 40 mg three times daily, or 80 mg twice daily is typically safe.

Widely recognized for its cognitive-enhancing properties, Ginkgo biloba is a popular supplement for improving focus and memory. "The extract from the ginkgo biloba tree may increase blood flow to ...