Many of us try to increase our intake of vitamin c in the winter months, since we think it helps our immune system fight cold and infections.While scientists are still debating whether vitamin c is a full proof cold remedy, none of them question vitamin c’s role in general health. Vitamin c’s antioxidant power fights free radicals that can damage our DNA and increases collagen production to repair various tissues in our bodies, such as tendons, blood vessels and skin. It also helps us absorb iron, and vitamin c has been shown to help some people get over.