Features high-potency vitamin C as both ascorbic acid and calcium ascorbate, a buffered mineral ascorbate form - for ease of digestion. Vitamin C plays a crucial role in normal immune function, is necessary for the development and maintenance of collagen supporting healthy skin, gums, cartilage and blood vessels, and is also critical for the absorption of iron. Wholesome, Food-based and Easy-to-Digest The wholesome food-base features nutrient-dense whole food sources of antioxidant nutrition, with ingredients such as grape skin, red cabbage extract, cranberry, orange and lemon peel. These phyto-nutrient-rich foods enhance vitamin C activity and provide co-factors that naturally occur with vitamin C.