Beta carotene is a substance from plants that the body converts into vitamin A. It also acts as an antioxidant and an immune system booster. Dark green and orange-yellow vegetables are good sources of beta-carotene. It is also available in supplements. Beta carotene also prevents from Leukoplakia, Lung cancer, Night blindness and Photosensitivity. A buyer’s guide to the best Beta carotene safe, effective, rapid-acting, non-sedating supplement from Homeherb.com