
MTHA in conjunction with THA has produced a four-page handbook in an effort to assist our horsemen and women in complying with the new Anti-Doping and Medication Program (ADMC) regulations that are expected to go into effect March 27, 2023. The handbook includes the Withdrawal Guidelines provided by the RMTC, as well as highlighting some of the more impactful changes. The handbook also includes updated withdrawal guidance for phenylbutazone.
Click here for the Quick Reference Guide for the Anti-Doping and Medication Program. Spanish version is available here.




The MTHA will hold a public meeting Thursday, October 22, 2026, at 11 a.m. Eastern Time via Zoom to discuss a proposed digital auction process for horses receiving two or more claims in a claiming race.

An October 7 Daily Record article about proposed Maryland Racing Commission regulations has generated questions about increased penalties, medication enforcement and the state’s investment in Thoroughbred racing.
