KER® Ker-Flex® is a powdered oral joint supplement suitable for all classes of horses engaged in various types of exercise. Progressive degeneration of joints is commonplace, especially in hard-working horses, and degenerative joint disease limits the careers of many performance horses. By the time clinical signs of joint disease are evident, damage has already occurred. KER-Flex contains a synergistic blend of glucosamine HCl, chondroitin sulfate, MSM, and hyaluronic acid to provide broad-spectrum support of joint health. 1 kg bag equals 66 servings.