Within the human body, vitamin C is involved in a number of key activities. One of the most important of these activities is assisting in the production of collagen, the primary protein utilized to synthesize connective tissue, which is necessary for proper bone, skin, and cartilage formation. Vitamin C, which is also known as ascorbic acid, is a critical antioxidant and free radical scavenger as well, though its effectiveness as an antiviral agent is debatable. Due to the importance of its functions, vitamin C intake is necessary for humans on a regular basis since it quickly passes through the body. Among the numerous sources of the vitamin are citrus fruits, tomatoes, peppers, melons, broccoli, and green leafy vegetables.