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Library Home > Nutritional and Dietary Supplements > Methylsulfonylmethane

METHYLSULFONYLMETHANE

What does it do? Methylsulfonylmethane (MSM) is a naturally occurring, organic sulfur-containing compound related to another sulfur-containing substance, DMSO (Dimethyl Sulfoxide). MSM is found in small amounts throughout nature and has been detected in small amounts in the blood and urine of humans.¹ Animal studies have shown that sulfur from oral supplements of MSM is incorporated into body proteins.²

Animal studies have reported that joints affected by osteoarthritis have lower sulfur content,³ and mice with arthritis given MSM, experience less joint deterioration.⁴ According to a preliminary report, a double-blind trial in people with osteoarthritis found that MSM, in the amount of 2,250 mg per day, reduced pain after six weeks.⁵

Where is it found? A precursor of MSM is formed initially by ocean plankton and released into the atmosphere, where it interacts with ozone and sunlight and returns to earth as MSM in rainfall. MSM can be taken up by plants and incorporated into their structure, but no measurement of the MSM content of foods has been done. Supplements containing MSM are available.

MSM has been used in connection with the following conditions (refer to the individual health concern for complete information):

Rating	Health Concerns
	Osteoarthritis
Reliable and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit. An herb is primarily supported by traditional use, or the herb or supplement has little scientific support and/or minimal health benefit.

Who is likely to be deficient? Although MSM is present in food, it is not an essential nutrient, so deficiency is not likely.

How much is usually taken? Some authorities report anecdotally that 250–500 mg per day has beneficial effects on a variety of health problems.⁶ However, the only controlled trial using MSM used over 2000 mg per day to treat osteoarthritis. More research is needed before reliable recommendations for MSM supplementation can be made.

Are there any side effects or interactions? According to some anecdotal reports, MSM has been used in human research for many years in amounts above 2000 mg per day with no significant adverse effects.⁷ However, diarrhea, skin rash, headache, and fatigue may be experienced in less than 20% of people, according to other anecdotal reports. Detectable levels of MSM in the brain of a person taking MSM supplements have been reported,⁸ but the significance of this finding, if any, is unclear.

At the time of writing, there were no well-known drug interactions with methylsulfonylmethane.

References:

1. Jacob SW, Herschler R. Dimethyl sulfoxide after twenty years. Ann N Y Acad Sci. 1983;411:xiii–xvii.

2. Richmond VL. Incorporation of methylsulfonylmethane sulfur into guinea pig serum proteins. Life Sci 1986;39:263–8.

3. Rizzo R, Grandolfo M, Godeas C, et al. Calcium, sulfur, and zinc distribution in normal and arthritic articular equine cartilage: a synchrotron radiation-induced X-ray emission (SRIXE) study. J Exp Zool 1995;273:82–6.

4. Murav’ev IuV, Venikova MS, Pleskovskaia GN, et al. Effect of dimethyl sulfoxide and dimethyl sulfone on a destructive process in the joints of mice with spontaneous arthritis. Patol Fiziol Eksp Ter 1991;2:37–9 [in Russian].

5. Lawrence RM. Methylsulfonylmethane (MSM): a double-blind study of its use in degenerative arthritis. Int J of Anti-Aging Med 1998;1:50.

6. Jacob SW, Herschler R. Dimethyl sulfoxide after twenty years. Ann N Y Acad Sci. 1983;411:xiii–xvii.

7. Jacob SW. Oregon Health Sciences University, Portland, Oregon. Unpublished communication.

8. Rose SE, Chalk JB, Galloway GJ, Doddrell DM. Detection of dimethyl sulfone in the human brain by in vivo proton magnetic resonance spectroscopy. Magn Reson Imaging 2000;18:95–8.

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