Natural Factors Vitamin C provides 1,000 mg of vitamin C per capsule in the form of calcium ascorbate. Buffered with calcium, it is gentle on the stomach and is suitable for people with gastrointestinal disorders. It can also be taken at higher therapeutic doses without causing adverse digestive effects. It has a neutral PH and is highly bioavailable. Vitamin C is a potent vitamin with anti-infectious properties and plays an important role in immune function. It is of primary importance for the formation of collagen and therefore contributes significantly to wound healing, healthy gums, strong bones and teeth, and the prevention of bruising. As a powerful antioxidant, it protects water-laden areas of the body (blood and intracellular and interstitial fluids) from free radicals. Because it is water-soluble, vitamin C cannot be stored by the body, hence the need for regular supplementation.