Humans unlike most other mammals, can’t synthesize vitamin C (due to the lack of an enzyme), therefore there is a need for consistent intake of vitamin C through the diet. In cases of insufficient vitamin C intake through the diet, food supplements may prove useful. The slow release Vitamin C 500mg contributes to: The normal function of the immune system The reduction of tiredness and fatigue The protection of cells from oxidative stress (antioxidant activity) The normal function of the nervous system The normal formation of collagen for the normal function of bones, teeth and skin