Now L-Proline is a useful supplement for vegetarians and those on low-protein diets. L-Proline, a protein teeming in mammals, is an amino acid needed for the production of collagen. Collagen is the primary component protein of all human tissues, especially the skin, tendons, bones, ligaments, joints, veins and arteries. With this protein, L-Proline is able to administer building blocks that maintain and strengthen the body structure and all its parts. A vegetarian or low protein diet can cause the body to produce less proline in the body. A reduced natural supply will not be able to support the maximum collagen production the body requires. Good thing L-Proline Vcaps, 100% vegetarian capsules are now available.