Our green tea is naturally decaffeinated to maintain green tea's antioxidants. Both ginkgo and green tea are valued for their strong antioxidant properties. Research indicates ginkgo helps maintain healthy circulation and oxygen supply to the brain and extremities, and helps maintain normal mental alertness, concentration and memory. Ginkgo, Asian and American Panax ginsengs, Siberian ginseng, astragalus, poria mushroom, fo ti and eucommia are traditional Chinese longevity herbs, believed to tonify the kidney essence. They were used to help support the healthy function of the immune system, as well as to help build the body's resistance to physical and mental stress. Enjoy this tea hot or iced.