Vitamin C 1000 mg is a high strength form of vitamin C, a water-soluble vitamin that helps fight free radicals. Free radicals can lead to oxidative stress and the premature aging of cells. Vitamin C also helps to maintain a healthy immune system and has multiple benefits for maintaining optimal health. Contributes to normal: Function of the immune system (including during and after intense physical exercise) Collagen formation for the normal function of bones and cartilage Collagen formation for the normal function of gums and teeth Collagen formation for the normal function of skin Functioning of the nervous system The reduction of tiredness and fatigue