Pro C Drink is used for additional TRIAD 2 Immune support. Pro C Drink provides vitamin C, a nutrient necessary for the growth, development, and repair of all body tissues as well as key nutrients such as Rose Hips, rutin, hesperidin and citrus bioflavonoids. The benefits of vitamin C supplementation include support for the immune system, adrenal function, collagen formation for healthy skin, and cardiovascular health. Vitamin C is a potent antioxidant, neutralizing free radicals and helping to recycle vitamin E and glutathione. The body does not make vitamin C, so it must be taken in through diet or supplementation.