Natural Factors MSM Joint Formula contains MSM, glucosamine sulfate, and chondroitin sulfate for triple-action joint health support. These top three joint support nutrients are combined in one formula to improve joint lubrication, fight inflammation, and help repair cartilage. This product works to relieve joint pain associated with osteoarthritis and protects against cartilage deterioration.

Medicinal Ingredients： Each capsule contains: MSM (Methyl-sulfonyl-methane) 300 mg Glucosamine Sulfate (potassium chloride from shrimp/crab exoskeleton) 300 mg Chondroitin Sulfate (sodium from bovine cartilage) 240 mg Non-Medicinal Ingredients: Gelatin capsule (gelatin, purified water), vegetable grade magnesium stearate (lubricant), rice starch.

5 capsules daily with food or as directed by a health professional.

McAlindon, Timothy E., et al. "Glucosamine and chondroitin for treatment of osteoarthritis." JAMA: the journal of the American Medical Association 283.11 (2000): 1469-1475. http://www.citeulike.org/group/1148/article/1041311 Houpt, J. B., et al. "Effect of glucosamine hydrochloride in the treatment of pain of osteoarthritis of the knee." The Journal of rheumatology 26.11 (1999): 2423-2430. http://europepmc.org/abstract/MED/10555905 Reginster, J. Y., et al. "Long-term effects of glucosamine sulphate on osteoarthritis progression: a randomised, placebo-controlled clinical trial."Lancet 357.9252 (2001): 251. http://www.ncbi.nlm.nih.gov/pubmed/11214126 Leeb, BURKHARD F., et al. "A metaanalysis of chondroitin sulfate in the treatment of osteoarthritis." The Journal of rheumatology 27.1 (2000): 205-211. http://europepmc.org/abstract/MED/10648040 Trentham, David E., Alexander S. Townes, and Andrew H. Kang. "Autoimmunity to type II collagen an experimental model of arthritis." The Journal of experimental medicine 146.3 (1977): 857-868. http://jem.rupress.org/content/146/3/857.abstract