... :Porcine,Bovine,Chicken,Bone,Fish Pure Collage Molecular Weight 2000~5000D Pure Colalgen Pure Collagen, is a water-soluble protein that ... is the product of enzyme catalyzed of gelatin. Pure Collagen is extensively applied in food, medicine, daily chemical, ... Additives Many studies have indicated that pure collagen has beneficial effect to the bone. Pure Collagen can be absorbed readily by ...