Methylsulfonylmethane (MSM) contains sulfur which is present in skin and connective tissue making it ideal for those who take part in high-impact sport, have a previous history of injury or just want to stay active. Each of these caplets from Puritans Pride provides 1500mg of MSM, which is also popular in beauty products, particularly those focused on the skin. Methylsulfonylmethane (MSM) contains sulfur which is present in skin and connective tissue making it ideal for those who take part in high-impact sport, have a previous history of injury or just want to stay active. Each of these caplets from Puritans Pride provides 1500mg of MSM, which is also popular in beauty products, particularly those focused on the skin. 1500mg of MSM per caplet. Ideal for those taking part in high-impact sport. Popular in beauty products focused on the skin. 120 caplets per pack MSM, from Puritans Pride, provides 1500 mg of MSM per caplet. Find out more here.