It has been recognized for years that MSM seems to have pain-relieving and anti-inflammatory effects, and it’s found in many joint nutraceuticals and other products. However, the mechanism has been a mystery.
A newly released study has found that MSM is able to inhibit the release of inflammatory chemicals so it works similar to aspirin and NSAIDs. like phenylbutazone (aka bute).
It’s a pretty safe assumption that this new information will catch the attention of regulatory bodies. Since tests already exist to detect MSM, they could be added to routine testing of horses in competitions, and racing authorities may change its classification.
Bottom Line: MSM’s potential for pain blocking means working a horse on MSM may lead to further injury. The potency of MSM relative to NSAIDs has not been determined; nor has potential interactions between the two.