What is Vitamin C Powder? Vitamin C Powder provides an even more cost-effective alternative to our popular Vitamin C 1000mg Tablets. The powder format also makes it an easy to addtion to other drinks & shakes. Vitamin C is an extremely popular supplement to complement a healthy, balanced diet. It is particualrly well-known for its role in supporting immune function, with research also suggesting that Vitamin C can help to reduce the duration of illness – something that can be of