Made With Non GMO Ingredients Patented Methylsulfonylmethane Sulfur Dietary Supplement OptiMSM Vegan Kosher Parve Gluten Free Bluebonnet's MSM Powder provides pure patented OptiMSM methylsulfonylmethane, a non-toxic form of active sulfur. Bluebonnet's MSM Powder is all natural and tested in our own state-of-the-art laboratory for purity and potency. Available in easy-to-mix powder for maximum assimilation and absorption.