Made With Non GMO Ingredients Patented Methylsulfonylmethane Sulfur Dietary Supplement OptiMSM? Vegan Kosher Parve Gluten Free Bluebonnet s MSM 1000 mg Capsules contain patented OptiMSM? methylsulfonylmethane a non-toxic form of active sulfur that is tested in our own state-of-the-art laboratory for purity and potency. MSM helps support healthy joint cartilage and connective tissue. Available in easy-to-swallow vegetable capsules for maximum assimilation and absorption.