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Puppy threw up dewormer, sick, vomiting, diarrhea. What should I do?

Updated On September 23rd, 2025

Pet's info: Exotic | Unknown - Exotic | Male | unneutered | 1 month and 25 days old | 38 lbs

Puppy threw up his dewormer a few minutes after it was administered. They are not eating, having a hard time keeping even water down, and diahrrea constantly, occasional small amounts of blood in stool. One threw up a (round?) worm earlier. Are medications and worms causing digestional upset? Earlier mentioned they have productive coughs occasionally. They're just having a really hard time, what do I do about dewormer and feeding, and how to keep them comfortable until we can get a vet?

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on February 28th, 2018

Poor pups. While a heavy parasite load can cause severe GI upset, and anemia which can cause a pup to become extremely lethargic, have bloody diarrhea, etc, I would also want to rule out underlying illnesses as a possibility. It would be best to bring them to a vet ASAP especially if they are lethargic or unable to keep any food or water down as puppies can quickly become very dehydrated. They may also need supportive care such as an IV or injected medications if they are very ill from the parasites or other causes. You can try continuing to offer water, or rubbing a little honey on their gums for energy until you can get to the vet, however due to the severity of symptoms it would be best to seek emergency care.

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