Vitamin C, also known as ascorbic acid, is very important to our bodies. Vitamin C can help strengthen our immune system, provide antioxidant power, and can protect our heart. Vitamin C can be found in a variety of fruits, vegetables, and can be taken as a supplement. Since most supplements on the market ARE NOT closely monitored by the Food and Drug Administration (FDA), it is important to take in these vitamins naturally, for example, through fruits like oranges, apples, bananas, and kiwi.