Popular feed supplement ingredient removed from banned substances list

Horseandhound.co.uk - Full Article

Eleanor Jones
13:05 - 6 October, 2017

Feed supplement additive MSM has been removed from the FEI’s prohibited substance list after a U-turn by the international federation.

Confusion had been caused by the inclusion of MSM (methyl sulphonyl methane), under its seldom-used alias dimethy sulphone (DSM), on the FEI’s list as a controlled medication and specified substance from 1 January next year.

The FEI told H&H in June that the naturally occurring substance, which is found in many plants and widely used in equine feed and supplements, is also the major metabolite of banned chemical DMSO, or the substance into which this solvent is broken down in the body.

A spokesman said high levels of MSM could “indicate abuse of DMSO that would be detectable for a longer time after administration”, but that it was unlikely that its therapeutic use at normal levels would cause a positive test...

Read more at http://www.horseandhound.co.uk/news/msm-removed-from-banned-substances-list-634169#4WoqAyqqwWlbPAax.99