This supplement intended helps relieve pain associated with osteoarthritis using glucosamine sulfate, chondroitin, and MSM, ingredients that play a key role in building healthy cartilage. They also protect against the deterioration of healthy cartilage and are effective in reducing joint pain. MSM, a naturally occurring sulfur compound found in our bodies as well as many foods, inhibits pain impulses along nerve fibres, helping to reduce pain and muscle spasms. The glucosamine in this product is derived from shellfish.