Vitamin C is an organic chemical compound that belongs to the group of polyhydroxy alcohols. It is a water-soluble substance, the excess of which is excreted from the body with urine and sweat. Human body is not able to synthesize vitamin C on its own, which is why the compound is considered an exogenous ingredient that must be delivered to the body along with the daily menu or in the form of dietary supplements. Naturally, vitamin C is found in food primarily in fresh vegetables and fruit. Ascorbic acid can be found in acerola, blackcurrant, oranges and strawberries, as well as in kale, Brussels sprouts, peppers and kohlrabi.

Vitamin C helps in the proper functioning of the immune system and also supports the maintenance of proper functioning of the immune system during and after intense physical exercise. In addition, L-ascorbic acid supports the proper production of collagen to ensure optimal functioning of blood vessels, bones, cartilage and gums, as well as teeth and skin. The substance also contributes to maintaining proper energy metabolism and optimal functioning of the nervous system. Vitamin C helps to reduce tiredness and fatigue and what is more, it supports the maintenance of normal psychological functions and helps protect cells against oxidative stress. The compound also supports the regeneration of the reduced form of vitamin E and increases the absorption of iron.