Proline

Proline is one of the main amino acids of collagen and is also helpful to bone, skin, and cartilage formation. Proline can be formed from glutamine or the amino acid ornithine. In foods, it is found readily in dairy products and eggs, with some found in meats or wheat germ. Proline is helpful in maintaining joints and tendons, in tissue repair after injury, or for any type of wound healing.