The Food and Drug Administration (FDA) issued an Emergency Use Authorization on July 15 for the use of ivermectin oral solution for the short-term prevention of New World screwworm (NWS) in horses.
FDA found that the product’s known and potential benefits outweigh the potential risks.
“We at USDA have been working with our federal partners to prepare for any potential infestation of animals that may occur as a result of New World screwworm, and today’s announcement is another step in the right direction,” said USDA Secretary Brooke Rollins.
Ivermectin Liquid for Horses is sponsored by Canada-based Alberta Vet Labs Ltd. and is available only by veterinarian prescription. The product is a clear, ready-to-use solution that may be administered as an oral drench or through a tube from the horse’s nose to stomach.
The emergency authorization allows the use of Ivermectin Liquid for Horses when administered within 24 hours of birth or at the time of initial wound care. The product is not for use in species other than horses, and is only intended for the prevention of NWS, not treatment. If a wound is already infested with NWS, or if infestation occurs after ivermectin administration, then veterinary care is recommended.
“This product’s window of prevention lasts no more than 24 hours, so it is important that the product be used alongside other preventive measures such as bandaging, repellents, and other fly-control methods,” said Timothy Schell, Ph.D., director of the FDA’s Center for Veterinary Medicine.
This marks the FDA’s 11th Emergency Use Authorization for NWS prevention or treatment. — Anna Miller Fortozo, WLJ managing editor
