MSM fortified hyaluronic acid joint supplement. Hyaluronic acid is a naturally occurring component of joint fluid. It can only be supplemented by injection or oral absorption. In studies, MSM has shown to relieve symptoms associated with osteoarthritis. These vital elements have come together to create LubriSyn HA+ for a natural, synergistic, anti-inflammatory effect. Veterinarian developed, recommended and approved. Each 1 2 oz dose contains 150 mg MSM and 75 mg sodium hyaluronate.