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My cat got Zyrtec twice today. Is it an overdose? Will she be okay?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Female | spayed

I gave my cat 5mg Zyrtec last night and then wasn't thinking and gave her another 5mg this morning. Will she be okay???

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on November 15th, 2019

She should be fine but you may notice some side-effects. The most common adverse effects of zyrtec are sedation, lethargy, vomiting, drooling (hypersalivation), and lack of appetite. If the side effects last more than 8 hours you should have her examined b your vet. I do not recommend you give her any more for at least another 24 hours.

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