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Is it harmful if my dog was dewormed multiple times recently?

Updated On September 23rd, 2025

Pet's info: Dog | Toy Poodle | Male | neutered | 8 years and 10 months old | 8 lbs

My toypoodle had a parasite. The vet dewormed him 16 days ago and again 1 day ago to make sure it was gone. Today, we took him to a pet stop clinic and they also dewormed him. Can this be harmful to him (from excessive deworming if that's a thing)? If so, what should I do? Thanks in advance!

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1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on November 5th, 2017

Most of the common dewormers are incredibly safe, so I wouldn't worry about any toxic effects from overuse. If Toto shows any signs of illness, like vomiting, diarrhea, or profound lethargy, then I would discuss this possibility with your vet.

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