C-Ultratabs™ features vitamin C in the form of mineral ascorbates, to deliver high levels of vitamin C in a short period of time. In addition to its well known function as an antioxidant nutrient, vitamin C plays an important role in immune function and collagen production. Collagen is found in tissues throughout the body, including skin, bones, and teeth. The vitamin C in C-Ultratabs is non-acidic to reduce the risk of gastrointestinal upset sometimes associated with high vitamin C intake.