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Dog with gastroenteritis, vomiting bile, not eating. When to call vet?

Updated On September 23rd, 2025

Pet's info: Dog | Beagle | Female | unspayed | 18 lbs

I just took Bailey to the vet yesterday. She has gastroenteritis and was put on antibiotics. She just took her 2nd dose and started to look a little better today but still very low energy. She started drinking water today but still no food and the last time she ate was Wed night. My concern is that she vomited yellow bile last night 3 times and now again tonight once. So I’m afraid she’s not getting her antibiotic. Do I need to take her in emergency tonight or call tomorrow? Is this normal?

1 Answer

Most Helpful Answer

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Answered By Rebecca, DVM

Veterinarian

Published on June 22nd, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach. If it is more than a couple of hours after taking her medication before she vomited, Bailey probably got most of her dose. However if she continues to vomit, or isn't eating at all after 48 hours she may need some fluid therapy. I would recommend contacting her vet tomorrow if she still isn't eating. If she vomits anymore tonight or seems to feel worse then she may need to go to an emergency clinic tonight.

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