my friends dog got ivermectin toxicity so this drug is never to be mixed with ketoconazole so NEVER DO THAT. Her dog is now on a low dose of interceptor daily due to them trying to avoid ivermectin since her dog went into a coma due to those two drugs being mixed. I would try the promeris first then go to ivermectin - my friend sees a dermatologist as well but she went to another derm who gave her those combo drugs that almost killed her yorkie so make sure NEVER EVER MIX those two drugs so if they recommed it RUN |