Sunday, Apr. 27, 2025

Items Added To FEI Prohibited Substances List

The FEI Bureau has approved changes to the FEI Equine Prohibited Substances List. The new list will be effective on Jan. 1, 2014.

The changes are summarized below:

-Two new Controlled Medication substances have been added to the list for 2014: metformin, a potent but legitimate oral anti-diabetic drug with a potential welfare risk; and levothyroxine, an exogenous thyroid hormone replacement that could enhance performance.

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