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Cat vomiting daily, vet tests normal, what else could it be?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | 1 year and 1 month old | 9 lbs

My cat has been vomiting almost daily. After several vet visits and several hundred dollars, nothing seems to have helped for longer than 5 days. He has had xrays that came back clean, a clean stool sample, normal bloodwork, a steroid shot helped for a few days but he started vomiting again, his food was changed twice but he is still getting sick. He is now on a tapering dose of prednisolone but he is still vomiting daily. We also tried Pepcid and he only seemed to vomit more.

2 Answers

Most Helpful Answer

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Answered By Ann Dion, DVM

Veterinarian

Published on March 2nd, 2019

Hello and welcome to Petco Pet Education Center, formerly Petcoach. I am sorry you are having trouble with Nigel and that he is sick. Vomiting in cats can be very difficult to diagnose the underlying cause, and often require many tests and treatment trials to find the answer. I would recommend working him up for either food allergies, or IBD. IBD would require a biopsy to diagnose. A scope is recommended as well for this. The other thing you could trial first is a diet trial for food allergies. Diet trials are very tedious and difficult to perform, as you need to feed the diet for 8 weeks, and have that the ONLY food that goes into Nigel, including medicated chews. You start with a diet like Hill's z/d or Hill's hypoallergenic. If the vomiting improves, then you slowly add in foods, one at a time, to determine what causes the allergy. Just switching foods for a week or two will not tell you if it is a food allergy. Discuss these options with your vet. If these don't work, then I would recommend a consult with an internal medicine specialist. Best of luck with Nigel!

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Other Answers

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    Answered By Dr. Leigh, DVM

    Veterinarian

    Published on December 2nd, 2021

    Chronic vomiting in cats can be caused by a variety of disease including inflammatory bowel disease, food allergies, infections, etc. If all the lab-work has turned out normal then your vet could try him on a hypoallergenic diet and/or a trial of medicines to treat inflammatory bowel disease. You could also talk to your vet about doing more advanced diagnostics, ultrasound, endoscopy with intestinal biopsies to get a definitive diagnosis.

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