Methylsulfonylmethane (MSM) is a sulfur compound found in plants, animals, and the human body. Many people take it as a supplement to support joint flexibility and comfort. It also promotes healthier skin and hair, and helps with post-exercise recovery. A few individuals use it for immune health.
MSM comes in capsules, tablets, or a powder. Taking it with meals can prevent mild stomach upset, and splitting the dose through the day often works better.
Most people handle MSM without trouble, but occasional digestive issues can happen. There is limited evidence suggesting it might have mild blood-thinning properties, so check with a doctor if you are on blood-thinners.