Vita Flex Pro MSM supplement is recommended to support healthy joints in horses, dogs and cats. It is widely used to fight inflammation and improve circulation. It is primarily thought of as an arthritic supplement but has other actions as well. Vita Flex Pro Horse MSM contains ultra pure methylsulfonylmethane, a naturally occurring source of bioavailable sulfur. Sulfur is important for connective tissue health. It is a component of glucosamine and collagen. Sulfur is also important for keratin for hair, skin and hooves. Sulfur also aids in membrane health and has antioxidant activity. Since 1988, horsemen and pet owners have relied on the quality and value of Vita Flex Pro MSM to deliver the benefits of this unique ingredient.