Vitamin C is a water soluble nutrient well known for its vital role in the immune system. Vitamin C is also necessary for the production of collagen (a structural protein in connective tissue) and is therefore important for skin, bone, and joint health. Vitamin C is needed for animo acid metabolism, synthesis, and the utilization of many nutrients, such as folic acid and iron. It is also a highly effective antioxidant that can protect the body's cells and molecules from damage by free racials and reactive oxygen molecules generated during normal metabolism and exposure to environmental stressors. NOW C-500 Complex is a blend of Acerola and Rose Hips (natural sources of Vitamin C) plus Citrus Bioflavonoids and Rutin which work synergistically to supoort Vitamin C utilization.