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 tablets from Swanson Health provides 1500mg of Truflexâ 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 tablets from Swanson Health provides 1500mg of Truflexâ MSM, which is also popular in beauty products, particularly those focused on the skin. 1500mg of Truflex® MSM per tablet. Ideal for those taking part in high-impact sport. Popular in beauty products focused on the skin. 120 tablets per pack Ultra MSM 1500mg (Swanson) is a Truflex® registered supplement. Read more about this health supplement.