Deworming your horse is an essential part of managing your horse’s overall health. Deworming is the removal of internal parasites (worms). Dewormers, called anthelmintics, play an important role in controlling parasites in horses; however, either the incorrect or too intensive (frequent) use of dewormers can lead to drug resistance. Your vet can help you schedule deworming to keep your horses healthy and avoid resistant parasites.

This free fact sheet offers a general overview of deworming your horse, including information on common parasites, dewormer options, alternative methods, creating a deworming schedule, parasite control via manure management, drug resistance, and more.