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My cat has seizures. Vet suggested Tegretol, but warned it's lethal.

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 8 years old | 12 lbs

5.5 kgs(12 pounds) neutered male 8 years old tabby cat.(was neutered at 7 months old). He has an epileptic seizure every 8 hours. We have the footage of the seizure and can send it if requested. Veterinarian suggested Tegretol (includes Carbamazepine), and said we should give him 0.1 mililiters orally and also said even 1 dose can be lethal. What do you suggest?

2 Answers

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on September 17th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! Seizures can occur due to many reasons that go from a toxicity, metabolic diseases, inflammatory diseases and even tumors. I would reach for more traditional anti-seizure drugs such as phenobarbital. This is something your veterinarian can prescribe for him. Good luck and have a good day! Hoping for a speedy recovery!

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on November 3rd, 2017

    Thanks for using Petco Pet Education Center, formerly Petcoach! Sorry that you are going through this. Good job, it sounds like you have done everything you can to help Texugo. A seizure that long would be very concerning if he truly was having seizures that whole time. There are other medications you can add on to the ones that you are giving at this moment. Generally diazepam is avoided in cats as it can affect the liver. I think that you could consider adding a medication called zonisamide to the phenobarbital and potassium bromide. You could discuss this with your veterinarian to see if that would be ok based on his current condition but that may help control the seizures. Good luck!

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