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My dog had HGE. Why is his poop still bloody after treatment?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 1 year and 10 months old | 65 lbs

My dog just finished treatment for HGE two days ago (flagyl and amoxicillin). Today he had some blood tinged diarrhea. But it wasn't excessively bright like when he had HGE. Is it normal for him to continue to experience some occasional blood tinged diarrhea? He's had solid poops that are normal and that has had little to no blood in it as well.

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on August 4th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This is actually not expected. This may mean that Ozzy may need to continue to be on therapy for the HGE. For this reason, I would encourage you to keep a close eye on him. If this continues to happen, I recommend that you have him evaluated by a veterinarian for further assessment and treatment. You can also check in with your veterinarian to see if they can prescribe another course of the metronidazole. Otherwise, if this is not observed again, he may be fine. Good luck and have a good night!

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