Patented crystalline glucosamine sulfate (pCGS) is a type of glucosamine ... GS requires stabilizers, such as potassium chloride (KCl) or sodium chloride (NaCl), so it has a 74% purity.

While chondroitin sulfate and glucosamine sulfate both have well-documented, beneficial effects in patients with osteoarthritis, the exact molecular actions of these drugs are also unknown.