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Why is my dog still sick with diarrhea and vomiting after antibiotics?

Updated On September 23rd, 2025

Pet's info: Dog | Boxer | Female | unspayed | 4 months and 18 days old | 5 lbs

My dog just regurgitated all of the food that she ate three hours ago. Also, she had diarrhea with blood/mucus in her stool about a week ago. The vet suspected infection and gave antibiotics that she finished yesterday, however, she continued to have diarrhea today and has now regurgitated. Is this reason for more concern?

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on August 9th, 2018

I hate to hear that Jersey is not feeling well. I do think the continuing diarrhea and regurgitation do indicate that she did not respond like she should have to the antibiotic. No knowing her full history, its hard to say what could be causing it but in puppies, parasites including Giardia are very common. You can also see infections in the GI tract, chronic foreign in bodies, organ dysfunction and food allergy as other causes. If Jersey is acting normal, has a good energy level and normal pink gums, I would recommend to make an appointment with her normal veterinarian to discuss next steps. The doctor may recommend a special diet, bloodwork and/or radiographs to start trying to figure out what is going on. She or he may also recommend special parasite testing depending on where you live. Feed Jersey small amounts of boiled white breast chicken meat and white rice. Make sure she is drinking water and keep her in a cool, comfortable area. If Jersey seems to be uncomfortable, has pale gums, seems weak or in distress, then you should go to the emergency clinic. Use your best judgement. I hope she starts feeling better asap!

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