1 Gram of MSM Powder Per Serving (500 Servings) High-Quality MSM Powder 500 Grams of Lab Tested Pure MSM Powder Per Bottle Gluten Free and Non-GMO Manufactured In a GMP Compliant, FDA Registered Facility Methylsulfonylmethane (MSM), is a sulfur compound... 1 Gram of MSM Powder Per Serving (500 Servings) High-Quality MSM Powder 500 Grams of Lab Tested Pure MSM Powder Per Bottle Gluten Free and Non-GMO Manufactured In a GMP Compliant, FDA Registered Facility Methylsulfonylmethane (MSM), is a sulfur compound that has been found to occur naturally in the human body. It can be found in milk, green vegetables, fish, and in many grains. MSM is often described as tasteless and odorless. The extract generally comes in the form of a white crystalline powder that can be dissolved in water. This product should be stored in a cool, dry place for maximum shelf life.