Many recent scientific studies have shown the effectiveness of taking supplements with the proper combination of glucosamine sulfate and chondroitin sulfate. These compounds found in the soft cartilage, tendons, and synovial fluid, are essential to the healthy functioning of tendons and joints, especially with advancing age.* 21st Century’s Glucosamine and Chondroitin combines these two nutritional elements in the proper amounts for your safe and effective use.* No added sugar, yeast, preservatives, artificial flavors or colors. *This product is not intended to diagnose, treat, cure or prevent any disease.