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Filing a Medication Report Form: What, Why, When, Who and How

by Natalie Voss | Nov 9, 2026, 12:42 PM

A horse or pony exhibiting at a USEF licensed competition who receives any medication which contains a prohibited substance is not eligible for competition unless all other requirements of GR411 have been met. That includes documentation of the details of the medication administration in a timely-submitted official Equine Drugs and Medications Report Form, which can be submitted online. A form is “timely-submitted” when the electronic form is submitted after the last administration of the medication and before the horse competes.

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What is a Medication Report Form?  A Medication Report Form is a necessary component of GR411 and is also referred to as an MRF. A paper form will only be accepted by the show office in the rare instance that there is a lack of internet or phone service and filing an electronic form is impossible.

Why does USEF use MRFs? MRFs are required to document the therapeutic use of a prohibited substance given to horses competing under USEF rules. GR411 does not apply to all prohibited substances or scenarios. For questions about the permissibility of a medication or scenario, please see Chapter 4 of USEF’s General Rules, USEF’s Equine Drugs and Medications Guidelines booklet, or as always, reach out to the Department of Equine Drugs and Medications for guidance.

When should an MRF be filed? An MRF should be filed electronically directly following the therapeutic administration of a prohibited substance for the treatment of an existing illness or injury. If you are unsure whether or not your treatment plan meets the qualifications of GR411, consult with the Drugs and Medications office. If the medication and the reason for administration comply with GR411, an MRF needs to be filed after the administration of the prohibited substance and before the horse enters the show ring or is actively being judged.

Who can file an MRF? Except for certain scenarios involving the emergency use of flunixin, an MRF can be filed by any of the horse’s responsible parties.

How do I file an MRF? MRFs are electronic and can be found on USEF’s website. The MRF is an electronic fillable form goes directly to the D&M office. No further paperwork on the administration of a prohibited substance needs to be taken to the show.

Visit this page to submit a MRF.

A few tips on using the electronic MRF:

  • Boxes with red asterisks are required fields and the form will not allow for completion without information entered into each of these.
  • The medication/treatment section requires the addition of at least one medication or treatment. The medication or treatment must have already occurred before completing the form as the MRF will not accept future dates or times.
  • After the addition of each medication, even if there is only one, press the add button. The form can record multiple medications if applicable.  
  • After completing the medications section and ensuring a show is selected and all fields with red asterisks are completed, click the “I am not a robot button” and then click Create. The form will have you acknowledge that you understand the horse cannot compete for 24 hours after the administration of a prohibited substance. After acknowledging the pop up, the screen will show a timestamp.

    If the screen does not shift and show a time stamp, the form is missing information and is not yet completed or submitted.

    If a time stamp is shown, you have successfully completed your electronic MRF.
  • A receipt will be sent out within minutes to the Contact Email and Veterinarian Email provided on the form.

Once filed, electronic MRFs cannot be deleted or edited by USEF or the filer. If incorrect information is ever entered, a new MRF with the correct information should be filed immediately. In such instances, there is no issue with multiple forms being filed to correct a mistake.

If you are having trouble filing an MRF, do not hesitate to reach out to the Drugs and Medications office for assistance by email at [email protected] or phone at 800-633-2472.