Several studies have shown that Glucosamine and Chondroitin are highly effective in supporting and improving overall joint health and flexibility. Glucosamine and chondroitin sulfate are natural substances found in and around the cells of cartilage. Glucosamine is an amino sugar that the body produces and distributes in cartilage and other connective tissue, chondroitin sulfate is a complex carbohydrate that helps cartilage retain water. Flexacil Ultra's unique formula combines premium grade Glucosamine and Chondroitin with a number of scientifically studied all-natural ingredients to provide your body with the essential building blocks to build and maintain healthy joints as well as relieve pain, and strengthen & increase joint flexibility.