Also indexed as: Dimethyl Sulfone, MSM
Methylsulfonylmethane (MSM) is a naturally occurring, organic, sulfur-containing compound related to another
sulfur-containing substance, dimethyl sulfoxide (DMSO). MSM is found in small amounts throughout nature
and has been detected in small amounts in the blood and urine of humans.1
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):
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.2 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.3 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,4
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. Jacob SW, Herschler R. Dimethyl sulfoxide after twenty years. Ann
N Y Acad Sci. 1983;411:xiii–xvii.
3. Jacob SW. Oregon Health Sciences University, Portland, Oregon.
Unpublished communication.
4. 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.