or ascorbic acid
Water-soluble organic compound important in animal metabolism .
Most animals produce it in their bodies, but humans, other primates, and guinea pigs need it in the diet to prevent scurvy . It is essential in collagen synthesis, wound healing, blood-vessel maintenance, and immunity . Some studies have found a moderate benefit of vitamin C in reducing the duration and severity of the common cold. It works as an antioxidant in the body and is used as a preservative. It is easily destroyed by oxygen. Excellent sources are citrus fruits and fresh vegetables.