Other ingredients
MSM
Names you may see: methylsulfonylmethane methyl sulfonyl methane
The quick take
MSM is short for methylsulfonylmethane, a sulfur-containing compound used in joint-health supplements.
A closer look
What forms will I see on a label?
It is sold alone and with ingredients such as glucosamine. Evaluate a combination product as a whole rather than attributing all effects to MSM.
Why people use it
Marketed for joint comfort and mobility, often combined with glucosamine in joint-support formulas aimed at maintaining an active lifestyle.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Small clinical trials have examined knee discomfort and function. These findings are promising for some outcomes but do not establish cartilage regeneration or a cure for arthritis.
What should I know before using it?
Persistent or worsening joint pain warrants assessment. Follow the specific product’s directions and discuss use alongside medication.
Sources & further reading
Published clinical study (PubMed) ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.