Originating in China, Ginkgo Biloba, also known as the ginkgo tree, is the world's oldest living tree species. Its longevity is attributed to its ability to withstand insects, disease and pollution due to the pharmacologically-active compounds in its leaves. The Chinese have long taken Ginkgo Biloba, particularly the elderly.

Ginkgo extract is obtained solely from the leaves, and extensive studies have been conducted on it. Ginkgo helps to maintain the circulation of the blood which helps to keep hands and feet warm, helps maintain the brain's oxygen supply, and thus helps maintain brain function.