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My cat got a double dose of Comfortis. Should I worry about an overdose?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 10 lbs

Hi, I just gave my cats their first dose of comfortis 270 mg, but one of them stole from the other cats bowl & got a double dose. Should I be concerned?

2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on July 5th, 2019

This is an overdose, and you may see signs such as vomiting, diarrhea, nausea, and anorexia. Studies show no permanent damage to cats given an overdose, so that's good news. If you do see any of those signs I mentioned above, have B seen by a vet to be safe. I hope this helps!

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1Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on

    This is an overdose, and you may see signs such as vomiting, diarrhea, nausea, and anorexia. Studies show no permanent damage to cats given an overdose, so that's good news. If you do see any of those signs I mentioned above, have B seen by a vet to be safe. I hope this helps!

    Vote icon

    1Pet Parents found this answer helpful

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