Ginkgo (Ginkgo biloba) is a vasodilator used to increase circulatory oxygenation to brain cells, which may enhance with memory problem, problem due to narrowing of air passage, despair, attention deficit malfunction of mind or body, blood clots, dementia, kidney problem, memory loss, respiratory problem, senility, stress, tinnitus, and vascular problem. The active compounds also act as free radical scavengers.