Capsules of 25,000 IU of synthetic beta-carotene. One of the colors in yellow and orange fruits and vegetables. This is an anti-oxidant that is made in the body into vitamin A. Carotenes can deposit in fat and make the skin appear orange. This “carotenemia” is a harmless condition. A variety of other carotene-like substances are important for good nutrition, including lutein, lycopene, and alpha-carotene. Smokers should not take synthetic beta-carotene.