DEAL Supplement Ginkgo Biloba 500mg Capsules are a concentrated herbal supplement made with ginkgo biloba leaf extract. The formula provides 500mg per serving and contains more than 24% ginkgo flavonoid glycosides. The ginkgo is sourced from Northern Asia and the product contains 240 capsules, providing up to a four-month supply. It is formulated to support brain function as part of a daily wellness routine. The capsules are also described as gluten-free, dairy-free, non-GMO, and free from several common allergens.