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Why is my senior cat vomiting monthly? Is it diet or disease?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 15 years and 3 months old | 11.5 lbs

My 15 year old cat has been having monthly vomiting episodes. No diarrhea ,constipation or any other symptoms. I am wondering if it could be diet related even though it's only monthly or is it more likely some disease? In January 2021 took him to ER vet cause vomiting bile. They treated him for "pancreatitis/cholangitis. He just vomits food now. They gave him a dose of antibiotics at the ER Jan21 but we didn't follow it up at home. What could be causing these vomiting episodes?

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on May 17th, 2022

Unfortunately, it would be hard to give an exact answers without an exam since there are many reasons why Louie might be vomiting. It's possible he has a hairball that is causing some build-up over time that leads to the vomiting. Food allergies can also cause occasional vomiting, as can eating too quickly during a meal. Other issues, such as functional problems with the esophagus causing food to come back up, or underlying illnesses leading to vomiting may also cause the monthly episodes you are seeing. It would be a good idea to have Louie seen by your vet since he is a senior kitty. They can take a general exam, bloodwork, and may recommend X-rays to check for issues such as megaesophagus which can cause vomiting like you described. From there, they can help determine if a diet change, medications, or other treatments may help.

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