For a long time, glucosamine dominated the market among supplements used to ease joint pain. Now, many practitioners prefer to use a combination of both glucosamine and chondroitin sulphate. Many have found this combination to be effective, particularly for runners, who tend to develop problems with their knees. Glucosamine and chondroitin sulphate are well absorbed by the molecules that make up cartilage. They are not available from food. It is not uncommon to have to take these supplements indefinitely to continue to experience relief.

Recent research has shown that the results of arthroscopic surgery for osteoarthritis in the knee is no different than that of placebo. This gives people further reason to at least give supplements, such as glucosamine sulphate, a try before enduring more invasive, expensive approaches.