MSM-GC contains top quality ingredients: MSM (OptiMSM®), glucosamine (Glucosagreen®), chondroitin (ChondroPure®) and vitamin C (Ester-C®). The advantage of using these branded ingredients is that the manufacturers place great value on research into the development, improvement, operation, production, use and safety of their products. This is a continuous process in which the highest quality serves as the benchmark.