Ginkgo biloba is a popular herbal supplement derived from the leaves of the Ginkgo tree. It has been used for centuries in traditional Chinese medicine to support cognitive function and memory. Ginkgo biloba is believed to enhance circulation by dilating blood vessels and improving blood flow to the brain, which may lead to improved cognitive performance and a reduction in age-related cognitive decline. It is also known for its antioxidant properties, which help to protect cells from oxidative damage caused by free radicals. Ginkgo biloba is available in various forms, including capsules, tablets, and teas.