Nature Made Vitamin C Tablets keep your immune system strong to help you look and feel your best. A powerful antioxidant, nature’s Vitamin C can help maintain your immune system, keeping you healthy and protecting your body from damaging free radicals that may cause cancer. The Vitamin C in these vitamin tablets is necessary in the production of collagen, which is essential for healthy skin. Vitamin C tablets also aid in the absorbtion of iron. Nature Made Vitamin C Tablets have no artificial colors, artificial flavors or preservatives. These vitamin tablets are formulated for easy absorption and have been verified and approved by the United States Pharmacopeia. Nature Made Vitamin C Tablets were the #1 Pharmacist recommended brand of Letter Vitamin supplements in 2011.