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How long until my puppy poops after taking deworming medicine?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | 20 lbs

How long does it take for a puppy to poop after you deworm it

2 Answers

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on January 12th, 2019

Most puppies will stay on their normal pooping schedule unless the dewormer causes GI upset, in which case it could be anywhere from 1 hour to the next day. If there are worms in the intestines who are susceptible to the dewormer, you will likely see them passing out in the feces within 12 hours. Also keep in mind, that you may miss a low parasite burden and that not all worms are visible to the naked eye. I hope this helps to point you in the right direction. Please feel free to post any additional questions!

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Other Answers

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on November 18th, 2016

    It typically takes anywhere from 24-48 hours for a dewormer to take effect. Don't be alarmed if you see dead worms in Finn's feces, it means the deworming treatment is working. It will usually take two deworming treatments for all the worms to be killed. The first kills the adults already present, while the second kills the worms that had not yet hatched at the time of the first treatment.

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    1Pet Parents found this answer helpful

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