Montana Board of Horse Racing Medication Policy

The Montana Board of Horse Racing follows the Model Rules and Standards set forth by the ARCI (Racing Commissioners International).  Part of these rules deal with the uniform classification of (Prohibited) Foreign Substances along with Controlled Therapeutic Medication Schedules.  Both the ARCI and the RMTC (Racing Medication and Testing Consortium) list these medications and withdrawal times.

In Montana, the only medications that horses are allowed to race on are Phenylbutazone and Furosemide.  Please consult your local veterinarian or the Montana Board of Horse Racing regulatory veterinarian in regards to legal amounts and withdrawal times.

The following warning is posted on the Racing Medication and Testing Consortium's website ( and all administering veterinarians need to be aware that withdrawal times are listed as “guidelines” only and that testing procedures can change from year to year.  All trainer's should consult their local veterinarians as well as the Montana regulatory veterinarian before having any controlled therapeutic medications administered.

Racing Medication and Testing Consortium WARNING
The information on the Racing Medication and Testing Consortium Withdrawal Times Database does not constitute and is not a guarantee, warranty or assurance that the use of any of the therapeutic medications at the dosage listed will not result in a positive post-race test. The Racing Medication and Testing Consortium is not responsible for results differing in any way from the ones stated herein.

Use of this database and its information does not lessen or relieve any trainer’s responsibility for affirming that, during a horse race, a horse is free of any therapeutic medication listed in his or her state’s racing commission rule book, and for complying with provisions of the state racing commission’s regulations.

Owners, trainers or any other persons responsible for the care of a racehorse are strongly advised to consult a veterinarian and the state racing commission regulatory veterinarian for guidance and advice on the use and withdrawal times of all therapeutic medications, as testing methodologies may change with little or no notice.

The guidelines provided in this database are not consistent with foreign regulations or laboratory methods. The RMTC cannot guarantee that guidelines provided are up-to-date. - See more at: