Check the listing for details. AniMed Pure MSM, 16 oz. Condition: New. Listed at 20.31 USD. MethylSulfonylMethane PowderSupports Joint & Connective Tissue Functions For Horses Vetri-Science MethylSulfonyMethane (MSM) For Horses is recommended to support proper joint function and connective tissue health. MSM Powder gives horses relief from such disorders as arthritis, inflammation, emphysema and other breathing problems, snake and insect bites, poor circulation, etc. Improves joint flexibility, reduces stiffness and swelling Reduces scar tissue Reduces pain associated with arthritis Helps break up calcium deposits in joints Offers a liver and tissue protective effect for Systemic Lupus patients Active Ingredient Per 12 g Scoop:Methylsulfonylmethane (MSM). . . . . 12,000 mg Inactive Ingredients: 0.1% silicon dioxide (to prevent caking). Directions For Use: 1 level scoop (12,000 mg) twice daily for 5 days, then 1/2 scoop (6,000 mg) twice daily