My dog is on heartworm meds. Can I give fenbendazole for roundworms?

Question

Hi, I have a heart worm positive dog that I recently adopted from a shelter, he is currently undergoing treatment for the worms (injection every month) through them. The past few days he has had diarrhea, and last night he vomited and there were roundworms in the vomit. Will there be negative interactions between his heart worm medication and fenbendazole for the roundworms? Shelter is not answering and I hate to think of the poor guy being infested with more worms. Thank you. Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 53 lbs

Dr. Melanie, BVSc MS · Accepted Answer

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question. Poor Louie! There are no significant drug interactions of fenbendazole in small animal use, so using it with ivermectin is not an issue. I hope this helps!

My dog is on heartworm meds. Can I give fenbendazole for roundworms?

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