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My diabetic cat is vomiting and drinking less after insulin. Why?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Longhair | Female | spayed | 8.6 lbs

My cat has diabetes and I have been giving her insulin. The vet told me to increase her insulin dose a couple weeks ago when she had her follow up tests. She has been fine, until the past couple days I noticed a change. She is drinking less water and going to the bathroom less. She is also throwing up her food after she eats it. Help on what can be wrong?

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on June 13th, 2019

Drinking less and urinating less means the diabetes is better regulated. So, that is good news. The vomiting is likely unrelated but you need to bring that up with your vet. Anything in the world can cause a cat to vomit - it is very non-specific so since your vet has all of Sox's medical history it is best to consult with them.

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