Great Lakes Gelatin ArmWorks Collagen - Protein for Dogs & Cats Hydrolyzed Collagen is a protein supplement unique in its amino acid structure Collagen Hydrolsate contains high amounts of glycine, lysine and proline Hydrolyzed Collagen repairs and builds cartilage, strengthens ligaments, tendons & muscles Hydrolyzed Collagen is beneficial in supporting and maintaining the joints It is a shortened form of collagen and is easier for the body to digest & absorb