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My cat is vomiting and hissing after booster shots. Is this normal?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 1 year and 5 months old | 11 lbs

Yesterday i took my cat to get his second round of booster shots. Most of the day he had been throwing up and hissing at the other cat. Should I be concerned?

1 Answer

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on April 29th, 2018

This is a known side effect but it is not very common, usually the side effects are less dramatic. i would recommend waiting until tomorrow morning, if you do not see any improvement please take him back to your vet to get treatment.

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