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My puppy is weak, vomiting, not eating after deworming. What to do?

Updated On September 23rd, 2025

Pet's info: Dog | American Bulldog | Female | unspayed | 2 months and 9 days old | 10 lbs

We have a 9 week old American bull dog that we got last Saturday and i took her to get her shots and heart worm medication and they gave her worm medication on Wednesday then the next day she is weak and won't really eat and keeps throwing up

1 Answer

Most Helpful Answer

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Answered By Lauren Barry, BVSc, MRCVS, DVM

Veterinarian

Published on June 10th, 2017

Hi, I'm worried if Zoey is still weak and vomiting. Young pups don't have much in reserve so if they stop eating they can deteriorate very quickly. It could be related to the de worming medicine if she had a lot of worms that died quickly, or she may have an illness like parvo, giardia or coccdia. If she's not eaten today, take her to the emergency vet tonight. If she's eaten some and is still walking about, take her in the morning.

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