Methylsulfonylmethane (MSM) delivers sulfur, a building block that shows up in plants, animals, and the human body. Most MSM supplements start with organic sulfur sources.
People reach for MSM mainly to ease joint stiffness and to cut down soreness after hard workouts. Others use it for stronger nails, clearer skin, thicker hair, or a general immune lift.
Powder and capsule forms are common. Taking it with food helps dodge stomach discomfort. Steady daily use over several weeks typically gives the best results.
Mild reactions can include an upset stomach, headache, or skin irritation. MSM might affect how blood thinners work, so check with your doctor if you take any.