In contrast to Drug Research, which tends to focus on single, concentrated ingredients, Nutritional Research and especially Cellular Nutrition Research yield much better results when using complexed nutrients. So instead of taking plain ascorbic acid, Vitamin C needs to be complexed with adequate amounts of bioflavonoids such as rutin and hesperidin, to duplicate more food-like benefits. The same applies to supplementing Mixed Carotenoids, which include alpha-carotene, lycopene, zeaxanthin, cryptoxanthin, and lutein instead of taking beta-carotene alone. Equally superior is taking a Vitamin E Complex in the form of alpha, beta, gamma, delta tocopherols, and alpha, beta, gamma, delta tocotrienols, rather than taking large, single amounts of dl-alpha tocopheryl alone... Full Text