4. Methylsulfonylmethane or MSM
MSM is an organic sulfur compound. Sulfur is needed to form connective tissue. MSM also seems to act as an analgesic by lessening nerve impulses that transmit pain.
Laboratory studies have found that MSM has anti-inflammatory and antioxidant effects. Sulphur, which is a major component of MSM, plays an important role in making collagen and glucosamine, both of which are vital for healthy bones and joints.
There is no government monitoring to ensure the purity of these products. Stick with a reputable manufacturer; choose products sold by large and well-established companies. If you don't recognize a brand name, ask about the company's reputation, how long it has been in business, and how long the store has stocked the brand.