Organic sulfur MSM is a nutrient produced naturally in the human body, mainly composed of sulfides, oxides and other chemical substances. MSM also appears in many foods and drinks, such as fruits, vegetables, cereals, wine, coffee, tea, and milk. MSM is widely known because it easily penetrates into tissues and cells in the body, allowing them to function normally. For this reason, MSM has many other health benefits, such as relief of joint pain, osteoarthritis and muscle aches. MSM is usually used as a dietary supplement to help people promote physical health. And this article briefly introduces how to use MSM and how MSM works.