21st Century Vitamin C 1000mg is a dietary supplement that provides high-potency vitamin C in convenient caplet form. Each caplet delivers 1000mg of vitamin C to support antioxidant protection and immune system function. This supplement comes in a bottle containing 110 caplets. Vitamin C is an essential nutrient that helps protect cells from oxidative stress, supports collagen formation for healthy skin and joints, and aids in the normal functioning of the immune system. The product is manufactured by 21st Century, a trusted brand in nutritional supplements.