Vitamin C, also called ascorbic acid, must be consumed in our diet because the body is unable to produce it itself. Vitamin C cannot be stored in the body, so it must be continuous supplemented. This vitamin has numerous functions in our body: it acts as an antioxidant, optimizes the immune system, it improves iron absorption, it plays a significant role in the production of cytokines, promotes wound healing and helps strengthen connective tissue, cartilage and bone.