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My cat is coughing and vomiting. Why isn't Benadryl working?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 8 lbs

My cat has been coughing and she has been throwing up I have been letting all of my cats some people are telling it is allergies I have been giving her some Benadryl but it doesn’t seem to help

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1 Answer

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Answered By Tomasz Wnuk

Veterinarian

Published on April 19th, 2020

Coughing and vomiting are not common signs in allergies in cats so Bendaryl is unlikely to help. Cats usually cough and vomit as a result of hairball in the stomach, foreign body (grass blade) in the throat, gastritis, kidney or liver disease or even asthma. If your cat has been coughing and vomiting for longer than 24-48hrs, you should take her to your local vets for a check-up. Your vet may advise a blood test or chest x-ray to find out what is going on.

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