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My dog is vomiting yellow bile on prednisone. Is it an emergency?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Female | spayed | 5 years and 9 months old | 68 lbs

My dog has thrown up yellow/green bile five times in the past hour and a half. She keeps licking her lips, too. She has also been on prednisone in addition to taking apoquel. Should I make a call to the emergency veterinary hospital or can I wait until her vet appointment at 10:20?

2 Answers

Most Helpful Answer

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Answered By Daniela Jessen, DVM

Veterinarian

Published on January 15th, 2019

When the vomiting does not stop and there is nothing left in the stomach to throw up except bile (a yellow fluid). It is important you take your pet to a veterinarian in these types of cases to get some relief, the vet can give her anti emetic to help stop the vomiting). gastrointestinal signs such as vomiting and diarrhea can be side effects of Apoquel . Also changes in prednisone dose (if there were any?) can have an effect as it is a drug that should not stop abruptly and the tapering of the dose needs to be very slow. So if there was for example a reduction too fast in the prednisone dose that could also cause vomiting as part of Addisonal crisis which is an emergency. Bottom line if she does not stop vomiting or she seems very lethargic and weak in the next hour take her to the emergency vet but if the vomit subside and she gets back to her normal self then go first thing in the morning.

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Other Answers

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on

    Thank you for contacting Pet Coach with your question about Bella. Given the amount of time she has thrown up in a relatively short period, I would make a call to an emergency vet to have her seen right away. I think it's best not to wait until later in the morning. Best of luck.

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