Ginkgo biloba is one of the oldest tree species originating in China over 150 million years ago. It is highly resistant to pollution and disease. Extracts from Ginkgo biloba leaves have been used for centuries in Chinese medicine and contain active components that increase blood flow and provide benefits. Research over the past three decades has shown Ginkgo biloba may help improve brain function by increasing blood and oxygen flow to the brain and body as well as help control inflammation and asthma.