Chondroitin sulfate is a mucopolysaccharide extracted from animal cartilage, primarily sourced from the cartilage of chickens, cows, pigs, fish, and sharks. Chondroitin sulfate helps enhance the ability of synovial membranes to produce hyaluronic acid, promoting the secretion of joint synovial fluid, allowing for more flexible joint movement. When used in combination with glucosamine, it has pain-relieving properties and promotes cartilage regeneration, making it widely used in joint health products.