Zahler Buffered C Powder is an easy-on-the-stomach Vitamin C supplement in powder form. Zahler Buffered C Powder contains Vitamin C plus the buffering minerals Calcium, Magnesium and Potassium Ascorbates. This advanced formula is easy on the stomach and non-irritating to the intestinal lining. Vitamin C is an essential antioxidant and a continuous supply is needed as it is water soluble and the body cannot store it. - Gentle and non-irritating Vitamin C - Delicious-tasting, berry-flavored powder - Supports immunity - Provides a robust dose of Vitamin C