Vitamin Supplement. Facts: Antioxidants help fight cell damaging free radicals in the body. Free radicals can lead to oxidative stress, which, studies show, contributes to aging. This provitamin A is part of the carotenoid family and readily converts to vitamin A is the system when needed. Beta-Carotene is also an immune system enhancer and antioxidant. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease).