Shark Cartilage (Chondroitin sulfate) helps protect joints by inhibiting the degradative enzymes that destroy articular (joint) cartilage. Shark cartilage, which is primarily composed of chondroitin sulfate, is best known for its anti-angiogenesis properties. Without inhibiting the growth of new blood vessels in the joints, calcification occurs and the body becomes unable to heal damaged joint tissues. Chondroitin decreases the degradation of cartilage as glucosamine rebuilds it. Our shark cartilage is obtained exclusively from legalized fishing methods.