Anti-Oxidants reduce free radicals that can cause a wide variety of health problems, starting on the basic cellular level. Mangosteen is a stronger anti-oxidant than either Vitamin E or C! Mangosteen contains over 40 types of Xanthones- a unique group of important anti-oxidants that naturally help strengthen your body's cells, tissues and organs. Mangosteen also contains catechins, polyphenols and other healthy bio-active nutrients. Mangosteen is so vital because anti-oxidants are the first line of defense in maintaining and regaining good health.