Glucosamine plays an important role in maintaining cartilage, the gel-like material that cushions joints. Chondroitin is a natural component of the cartilage that cushions joints and it appears to block the enzymes that can destroy crucial cartilage tissue. Chondrotin is also believed to promote water retention and elasticity in joint cartilage. Seven recent clinical trials indicated a 50% reduction in osteoarthritis symptoms when supplementing with chondroitin. Our Glucosamine Chondroitin combines 675 mg of d-glucosamine sulfate 2KCl and 425 mg chondroitin sulfate Na in order to deliver the elemental amounts of 500 mg / 400 mg respectively.