Vitamin C Supplement. Vitamin C plays an important role in supporting immune function. As an antioxidant, Vitamin C helps neutralize harmful free radicals in cells. Guaranteed free of: yeast, wheat, gluten, milk or milk derivatives, lactose, sugar, preservatives, soy, artificial color, artificial flavor, sodium (less than 5 mg per serving). (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.)