Nature Made Vitamin C 500 mg is ideal for those looking to supplement their diet to meet daily Vitamin C nutrient needs. Each serving (1 caplet) provides 500mg of Vitamin C, more than 100% of the recommended dietary allowances for healthy adults 19 years and older. Vitamin C is an antioxidant that helps neutralize free radicals generated from everyday living. It supports the immune system, aids in collagen synthesis for healthy skin, and increases iron absorption from food. These caplets are gluten-free, with no added colors, artificial flavors, or preservatives.