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(Dictyocaulus Arnfieldi)

Lungworm can cause coughing and respiratory difficulty in horses, although they are relatively uncommon. These worms are common in donkeys and easily transfer to horses grazing the same pasture.

Horses become infected by eating the worm larvae from the pasture. The larvae will then move to the lungs, where they become adult. These adults, living in the airways, can cause obstruction leading to coughing and breathlessness. The adults lay eggs which are coughed up and swallowed to then be passed out in the droppings; thus continuing the cycle.

Faecal egg count and a variety of other diagnostics can be carried out by a vet if this is suspected and an appropriate treatment determined.


Which Actives Treat Lungworms?

Ivermectin Moxidectin Ivermectin / Praziquantel Moxidectin / Praziquantel
Pyrantel Praziquantel Fenbendazole Mebendazole


Bimeda Equine is proud to promote best practices and targeted worming regimens, to help protect both today’s horses and future generations.

To find out more, visit our Best Practice Deworming Materials section.

To view and download our materials, such as our Horse Owner’s Guide To Worming, visit out Library Section.

Contact Us - US

Bimeda® US - Head Office
One Tower Lane, Suite 2250,
Oakbrook Terrace, IL 60181
Phone: 1 888 524 6332