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FEI Updates Prohibited Substance List for Horses Competing in FEI Disciplines

RELEASE: April 8, 2011
AUTHOR/ADMINISTRATOR: USEF Communications Department

Lexington, KY - Approved at the FEI General Assembly in Taipei last November, the 2011 FEI Equine Prohibited Substance List for horses competing in FEI classes became effective April 4, 2011. It is important for all who compete in the FEI disciplines to become familiar with the parameters laid out by the FEI Clean Sport Initiative.

The lists of Controlled and Banned substances are available at Additionally, the Athlete's Guide can be found here. The searchable FEI Equine Prohibited Substances Database can be found here. Until June 4, 2011, the 2011 list will show all Prohibited Substances that have been added or removed from the 2010 List and Database.

The FEI has also created applications for the iPhone and other smart phones, designed to show the latest changes to the rules as well as offer updates when any substances are added or removed.

Some of the most important changes affecting USEF members competing in FEI classes have been summarized below by USEF Drugs & Medications Chief Administrator, Dr. Stephen Schumacher:

Altrenogest (Regumate®) - has been moved from the Banned list to the Controlled Medications list for stallions and geldings. (This is a permitted substance in mares if a FEI medication form is filed.)
Medroxyprogesterone, Cyclophenil, Deslorelin and Fulvestrant - all anti-estrogenic or progestogen substances that have been added to the Controlled Medications list and were previously not listed.
Acetazolamide - was not listed previously, and has now been added to the Controlled Medications list.
Levomethadone - this is a different version of a substance already on the Controlled Medications list (methadone).
Ziconotide - has been specifically added to the Banned list.
For your convenience, a summary of changes is charted here.

USEF members are reminded to familiarize themselves with the changes brought about by the FEI Clean Sport Initiative, and to review all lists carefully before treating any horses that may compete in an FEI competition in 2011, and in any FEI discipline competition in the 2012 competition season which begins December 1, 2011.

Please contact the USEF Drug & Medications Department with any questions: