MSM (methylsulfonylmethane) is a naturally occurring form of sulfur that is found in plants and animals. MSM is used to support joint comfort in aging horses and performance horses.

Horses and other mammals cannot utilize pure sulfur in its elemental form. MSM is an organic sulfur compound found in fresh alfalfa and grains. It has high bioavailability and is safe to consume.

Sulfur is involved in many metabolic functions including carbohydrate metabolism, protein synthesis and protection from oxidative stress. It is also a component of glucosamine and collagen, both components of healthy connective tissue and cartilage in your horse.

Horses that are deficient in sulfur may experience inflammatory or degenerative issues like slow recovery from exercise, poor hoof quality, or joint pain.

Horses with arthritis, poor hoof condition, or aging horses are likely to benefit from MSM supplementation. It may also slow the progression of arthritis by preventing cartilage degradation, as shown in human studies. [1] [2]

MSM has benefits for heavily exercised horses by minimizing oxidative damage and inflammation allowing their muscles to recover quickly. It is frequently given to high-level performance horses to keep them in peak competition condition.

Toxicity from MSM has not been reported in horses. It is derived from the natural compound DMSO (dimethyl sulfoxide). Both MSM and DMSO have been used as supplements for horses since the 1980s.

MSM is regarded as one of the safest equine supplements. It has a short half-life in the body and excess MSM is rapidly excreted in urine and feces. [2][3]