Glucosamine & Chondroitin Plus contains a synergistic combination of glucosamine sulfate and chondroitin sulfate. Glucosamine sulfate is a well-absorbed source of glucosamine, an important precursor for the synthesis and maintenance of connective tissues. Chondroitin sulfate also supports formation of connective tissues, primarily joint cartilage, and helps protect existing cartilage. The potassium stabilized form of glucosamine sulfate is used, making these sodium-free products.