Medroxyprogesterone Acetate Becomes a Prohibited Substance

Medroxyprogesterone Acetate Becomes a Prohibited Substance

All horses competing at AQHA shows must be clear of medroxyprogesterone acetate on or before August 15, 2021.

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The AQHA Executive Committee recently voted to approve the recommendation by the AQHA Animal Welfare Commission to add medroxyprogesterone acetate to the list of prohibited substances, per AQHA Rule VIO401. Beginning August 15, 2021, medroxyprogesterone acetate will be considered a prohibited substance to protect the welfare and integrity of the American Quarter Horse.

Medroxyprogesterone acetate is a form of progesterone, which has the potential to enhance performance and lacks therapeutic effects.

American Quarter Horses, at all AQHA shows, must be clear of medroxyprogesterone acetate on or before August 15. Medroxyprogesterone acetate takes an extended period of time to clear a horse’s system. Thus, to avoid a positive test, AQHA recommends a minimum 180-day withdrawal time.

The penalties for positive medroxyprogesterone acetate tests are as follows:

  • First Offense = $2,500 fine, disqualification of horse and 90-day suspension of responsible party.

  • Second Offense = $5,000 fine, disqualification of horse and one-year suspension of responsible party.

  • Third Offense = $10,000 fine, disqualification of horse and five-year suspension of responsible party.

The penalties referenced above also apply to positive tests of other prohibited substances.

Medroxyprogesterone acetate is also a banned substance by the United States Equestrian Federation. View more information.

The health and well-being of the American Quarter Horse is AQHA’s utmost concern. In accordance with AQHA’s mission statement, the American Quarter Horse shall be treated humanely, with dignity, respect and compassion at all times. It is the goal of AQHA to educate members and nonmembers on this issue.

For more information on AQHA’s rules related to prohibited medications or substances, visit www.aqha.com.

AQHA News and information is a service of the American Quarter Horse Association. For more news and information, follow @AQHA and visit www.aqha.com/news.