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My dog is throwing up after antibiotics for bloody diarrhea, why?

Updated On September 23rd, 2025

Pet's info: Dog | German Shepherd | Female | spayed | 8 years and 11 months old | 61 lbs

My dog had diarrhea with a bloody mucus so I took her to the vet. All blood work including kidney and liver were perfect. Vet put her on med for ulcer and an antibiotic. Ever since that night, she vomits multiple times. There was no vomiting prior to the visit

2 Answers

Most Helpful Answer

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Answered By Megan, DVM, CVA

Veterinarian

Published on November 17th, 2017

It is possible that she could be having a sensitivity to the antibiotic or this could be another complication to her upset tummy. I would make sure you are feeding her a complete meal then wait 15-20 minutes befor giving her the antibiotics. Also you may want to try feeding her only plain chicken (no bones) and rice as This is bland and easy on the tummy for recovery. If This doesn’t help then I would talk to your vet about a recheck. Your vet may want to give her an anti-nausea medicine, change her antibiotics or take X-rays if indicated. I hope this helps!

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    Answered By Jennifer Summerfield, DVM CPDT-KA

    Veterinarian, Certified Dog Trainer

    Published on

    Poor Gracee! It's possible that the medication may be upsetting her stomach, so I would recommend calling your veterinarian to let them know this is going on. He/she may want to prescribe a different antibiotic for her, or may recommend having her come back in for some further testing to help determine what is causing the vomiting.

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