MSM stands for methylsulfonylmethane, which is a sulfur-containing compound found in plants, animals, and humans. It is also produced in a lab and marketed as a dietary supplement. MSM is relatively inert chemically and is able to resist decomposition at elevated temperatures. It is sometimes used as a cutting agent for illicitly manufactured methamphetamine. Although no medical uses for MSM have been approved, a variety of health benefits have been claimed and studied. Some of the most popular uses of MSM include:

• Decreasing joint or muscle pain, especially in people with joint degeneration
• Reducing inflammation
• Boosting immunity
• Treating arthritis
• Relieving gastrointestinal problems such as chronic constipation, ulcers, diverticulosis, and hemorrhoids
• Helping with exercise recovery

MSM is considered Possibly Safe at therapeutic doses, although further research is still needed to assess its safety for long-term use. Mild side effects have been reported, such as nausea, diarrhea, and headache. It is important to note that MSM should not be confused with DMSO (Dimethylsulfoxide), as they are not the same compound.