From the HBPA / Jennie Rees:

HIWU advisory regarding adenosine and hemo 15

Unedited horsemen’s advisory from HIWU (Horseracing Integrity & Welfare Unit):

JUN 11, 2025

In recent months, HIWU has adjudicated several cases under the Anti-Doping and Medication Control (ADMC) Program related to adenosine, a vasodilator, and Hemo 15, a foreign product that lacks FDA approval. Neither substance has any valid veterinary use in the racehorse.

Both substances are categorized as an S0 Non-Approved Banned Substance and therefore are prohibited from Use in a Covered Horse or Possession by a Covered Person at all times. Hemo 15 and any compounded product mimicking Hemo 15, as well as any products containing adenosine, adenosine monophosphate (AMP), or adenosine triphosphate (ATP)* should be disposed of immediately.

As a reminder, the Presence, Use, Administration, Possession, or Trafficking of any Banned Substance is subject to a period of Ineligibility of up to two years, a fine of up to $25,000, the disqualification of race results (as applicable), and public disclosure.

Horsemen or veterinarians with questions should reach out to sciencesupport@hiwu.org.

*Adenosine is also a component of AMP and ATP.

Link to advisory on HIWU website
About the National HBPA
The National HBPA is a not-for-profit association founded in 1940 and is headquartered in Lexington, Kentucky. It is the world’s largest Thoroughbred horsemen’s organization, representing approximately 30,000 horse owners and trainers throughout the United States and Canada through its 29 affiliates. The responsibilities of the National HBPA have greatly expanded as the racing industry has become more complex. In addition to its original benevolent mission, the National HBPA is the leading force for horsemen on the national stage, advocating for the advancement of the sport through safety and integrity initiatives, promoting racing, and assisting in the development of aftercare programs for retired horses.