VITAMIN C – ascorbic acid – is an organic chemical compound from the group of unsaturated polyhydroxy alcohols. Vitamin C has a number of extremely important functions in the body, it is primarily known as an agent that has a positive effect on the functioning of the immune system. Vitamin C is the best-known antioxidant. Thanks to its antioxidant properties, it plays a protective role in the body. It also stimulates the production of collagen, which ensures the proper functioning of blood vessels, bones, cartilage, gums, skin and teeth. Moreover, it contributes to maintaining correct energy metabolism, helps in correct functioning of the nervous system, helps in maintaining correct psychological functions, helps in protecting cells against oxidative stress, contributes to decreasing feelings of tiredness and lassitude. Vitamin C also helps in regeneration of reduced form of vitamin E and increases absorption of iron.