Methylsulfonylmethane (MSM) is a naturally occurring chemical in the body. MSM also exists in plants and other animals. On a cellular level, it is thought that MSM might have some effects on ...

Dear Dr. Roach: Would you address the benefits of methylsulfonylmethane (MSM) and possible side effects? My family members say it has really helped with arthritis pain. — S.P. Answer: I found several ...