anti-oxidants reduce free radicals that can cause a wide variety of health problems, starting on the basic cellular level. Mangosteen is a stronger antioxidant than either Vitamin Eor C. Mangosteen contains over 40 types of xanthones- a unique group of important antioxidants 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.