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My kitten stopped eating and playing after deworming. What's wrong?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed | 1.5 lbs

My 8 weeks kitten lose her appetite and play drive after deworming it's been 3 3days now and she didn't eat much at all.

3 Answers

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on April 15th, 2021

Some loss of appetite/lethargy can be normal after a deworming, especially if there was a heavy worm load that is now dying off. You can try to entice eating by offering some plain boiled chicken or wet food warmed up as cat's appetites are driven by smell. However, if it's been several days and Layla still isn't back to normal, isn't eating or drinking at all, or is very lethargic, it is best to let your vet know to make sure there isn't another underlying issue that needs to be addressed.

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10Pet Parents found this answer helpful

Related Answers from Veterinarians

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    Answered By Dr. Dayna, DVM, CVA

    Veterinarian, Certified Veterinary Acupuncturist

    Published on October 13th, 2017

    Deworming doesn’t usually cause cats to feel bad. If your kitty still acts sick tomorrow or won’t eat then I would recommend that she be seen by a veterinarian. Good luck and I hope she improves quickly. Thank you for using Pet Coach.

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    1Pet Parents found this answer helpful

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    Answered By Ana M, DVM

    Veterinarian

    Published on October 14th, 2020

    Thank you for submitting your question regarding Penny. I recommend that she sees a veterinarian today. I worry that she will become dehydrated from not eating well and losing fluid in the diarrhea. The veterinarian will examine her and determine if she would benefit from fluids under her skin and possibly anti-nausea medication. Deworming medication can make a kitten sick if she had a high worm burden. As the parasites die off, the kitten can become ill. I hope this information helps!

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    1Pet Parents found this answer helpful

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