WHAT IS VITAMIN C POWDER? Vitamin C Powder is an alternative to our popular Vitamin C 1000mg Tablets. Vitamin C is an extremely popular supplement to complement a healthy, balanced diet. Vitamin C contributes to maintaining normal function of the immune system during & after intense physical exercise (200mg per day). Vitamin C, also referred to as Ascorbic Acid, is a water soluble vitamin; water soluble vitamins are not stored by the body. Intense training can put the body under a lot