The main components of Chondroitin Glucosamine are glucosamine sulfate and chondroitin sulfate, but it was also supplemented with calcium, magnesium, and manganese. The product contains calcium and magnesium, contributes to normal muscle function and is necessary to maintain normal bones. The manganese in the product contributes to normal connective tissue formation. Chondroitin Glucosamine, like all other BioTech USA products, contains safe, carefully selected ingredients.