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Why are there still live worms in my kitten's poop after deworming?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed | 8 lbs

My kitten has live worms in het poop after i dewormed her for the second time. Is this normal?

4 Answers

Most Helpful Answer

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Answered By Kevin Sanada, DVM

Veterinarian

Published on September 24th, 2017

This is not uncommon to see. The dewormer works by paralyzing the worms and they are sometimes only partially affected by the drug. The fact that they are coming out shows that it's working to a certain degree; and the worms will likely die soon. No need to worry. Keep up with the deworming schedule as prescribed by your vet and she should be rid of them soon.

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9Pet Parents found this answer helpful

Other Answers

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on May 22nd, 2020

    Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about your puppies. Pooping the live worms means the deworming treatment is working. They need a deworming treatment every two weeks until they are 12 weeks old. Then one every month until they are six months of age, and after that they should be dewormed once every three months. I hope this helps!

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    Answered By Mara Howard, DVM

    Veterinarian

    Published on August 9th, 2017

    I'm sorry to hear Nittany has worms! They are no fun to find! It can be normal between wormings for them to shed the parasites. The worming doses are staggered to catch the parasites at their different stages of their life cycles to completely clear the infection. I would continue with the scheduled plan and then recheck a fecal sample two weeks after to ensure they are gone. Additionally, I would get her started on a once monthly oral heartworm preventative if she isn't already, as they contain ingredients to help prevent this in the future. Good luck!

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on August 12th, 2019

    It sounds like Koala needs another deworming treatment, but I'd have her seen by a vet. You may be using an ineffective treatment or the wrong treatment for the kind of worms she has in her intestines. I'd take her into a vet in the morning.

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