Ivermectin i think the name was changed to panomec thats what my vet told me, i used in on my racing pigeons years ago for fleas and internal parisites, and i used it on the wifes rabbits and used it on my dogs never had any problems with it, a couple of spots on the back of neck. Farmers use on cattle, sheep,pigs for internal parisites via injection.Last time i brought a bottle it cost me about £30.