Vitamin C is a water soluble antioxidant that protects healthy cells from damage. Because of its antioxidant properties, vitamin C works to destroy harmful free radicals that damage healthy cells. Antioxidants work best when taken in combination, versus taking one alone. Vitamin C is especially effective when taken in conjunction with Vitamin E. Vitamin C regenerates oxidized vitamin E, and restores the antioxidant potential of vitamin E in the body. Vitamin C is necessary for collagen synthesis and maintaining connective tissue. It also enhances absorption of non-heme iron, a form of iron found in plants and fortified foods. Vitamin C has been studied for various health benefits including its ability to support the immune system health. For those who smoke cigarettes, the need for Vitamin C increases. Smoking increases turnover of vitamin C in the body, causing a lower concentration of Vitamin C in the blood. Cigarette smokers should ingest at least 100 mg of Vitamin C daily. Nature Made Vitamin C tablets promotes the strength of the immune system by protecting the body S immune cells so they can function properly.