Vitamin C, also known as ascorbic acid, has several important functions1 and contributes to normal collagen formation for the normal function of bones and the normal function of cartilage.
Vitamin C contributes to the normal function of the immune system and helps protect cells from oxidative stress. Vitamin C can reduce tiredness and fatigue. It also contributes to normal psychological function and helps regenerate Vitamin E in the body.
1 https://www.efsa.europa.eu/en/efsajournal/pub/1815