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Banned vs. Controlled The FEI Clean-Sport division regulates the anti-doping program for all equine athletes in FEI-sanctioned events, as does Equine Canada and other governing bodies for different types of shows and competitions. The FEI has two classifications for prohibited substances; they are either BANNED, where the substance has no place in equine sport (such as cocaine or lithium), or they are a CONTROLLED MEDICATION (such as thyroid hormone or furosemide), where substances may be used as therapeutic agents, but are not allowed in competition. These substances or their metabolites may be allowable in certain concentrations in blood, tissue, or urine. Many of these medications need to be pre-registered for their use prior to competition. A full list of FEI's prohibited substances is available at The prohibited substances may further be classified as legal medications used inappropriately, such as in too high a dose or too close to an…

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