NOW glucosamine & Chondroitin combines some of the best known nutrients available for the support of healthy joints. Scientific studies have demonstrated that Glucosamine and Chondroitin can promote normal joints. Scientific studies have demonstrated that Glucosamine and Chondroitin can promote normal joint mobility and comfort. Trace Mineral Concentrate and Alfalfa have been included as complementary ingredients to offer optimal nutritional support for the maintenance of healthy joint structures.