The ginkgo is the oldest living tree species, geological records indicate this plant has been growing on earth for 150 - 200 million years.Ginkgo works by increasing blood flow to the brain and throughout the body's network of blood vessels that supply blood and oxygen to the organ systems. It increases metabolism efficiency, regulates neurotransmitters, and boosts oxygen levels in the brain which uses 20% of the body's oxygen. Ginkgo Biloba is one of the world's favorite supplements. Ginkgo prevents and benefits many problems throughout the entire body. Ginkgo Biloba's reputation has largely been founded on its ability to improve blood circulation, and with it aid in the treatment of cerebral insufficiency, dementia and tinnitus, ringing in the ears, and also impotence in men; but more commonly used to improve memory and general mental functioning.