Chondroitin sulfate is the perfect complement to glucosamine sulfate since chondroitin acts like a liquid magnet, attracting fluid into the proteoglycans. Chondrotin sulfate protects existing cartilage from premature breakdown by inhibiting certain cartilage chewing enzymes. Furthermore, like glucosamine, chondroitin stimulates the production of proteoglycans and collagen that are needed for healthy new cartilage. As a matter of fact, chondroitin works synergisically with glucosamine.8 Research on chondroitin sulfate has demonstrated that it too is effective in the treatment of osteoarthritis.