Dietary Supplement. Buffered Vitamin C Powder. Food Based, Potent, Antioxidant. Bio-Balanced Systems. Powerful Antioxidant Formula. Protective Phyto-Nutrients. Gentle on Stomach. 100% Buffered Vitamin C Formula - 1,000 mg Per Easy-to-Digest Serving! Rainbow Light s great tasting, sugar-free Super C powder delivers 100% buffered Vitamin C in a base of protective phyto-nutrient foods. A high-potency formula with 1,000 mg of vitamin C & 100 mg of calcium per serving. Vitamin C supports normal immunity, skin & connective.