Federal authorities have issued an online statement regarding legal and illegal uses of a nonsteroidal anti-inflammatory drug commonly administered to horses.
The Food and Drug Administration’s Center for Veterinary Medicine posted an open letter Oct. 14 to veterinarians on the use and compounding of phenylbutazone in horses.
A complete list of the 48 FDA-approved phenylbutazone, or “bute,” products is included, as are reminders of situations under which veterinarians may legally compound the drug. Specific instances are given, such as when a patient requires the drug in a strength or dosage form that is not available among the approved products. In this case, the letter advises using an FDA-approved phenylbutazone product as the starting material and reminds veterinarians that it is illegal to compound the drug from bulk.
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