All medications in racing are classified (Class 1-Class 5) based upon their potential to influence a horse’s performance and the welfare of the horse. All medications are also assigned a penalty class (Class A- Class D). Horsemen can consult the ARCI Uniform Classification of Foreign Substances list and ARCI Recommended Penalty Guidelines, maintained and updated from time-to-time by the ARCI, to determine a particular substance’s classification, as well as the ARCI Endogenous, Dietary, and Environmental Substances Schedule.
For more information on Controlled Therapeutic Substances, including withdrawal guidelines, click here.
WARNING: The information on the Controlled Therapeutic Substances List does not constitute and is not a guaranty, warranty or assurance that the use of any of the therapeutic medications at the dosage and withdrawal time listed will not result in a positive post-race test. These guidelines are based upon the administration of a single medication. Combining medications or using multiple doses of single medication may significantly affect withdrawal times.