As one kind of powerful antioxidant, Timed-release Vitamin C 500mg Tablets with many colors helps support the immune system and protects against damaging free radicals. These Vitamin C 500mg tablets named as instant-release tablets, which are designed to release all their medication as quickly as possible.Additionally,Vitamin C is necessary for the body to manufacture collagen,which is essential for healthy skin.500 mg Vitamin C caplets are a great way to ensure you get your daily dose of this important nutrient.