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My puppy has worms after dewormer. Should I contact the vet?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 2 months and 2 days old

According to the lady I got him from, last night was his second dose of dewormer. I haven't seen any signs of worms until this morning. Should I contact their vet or do they need more doses of dewormer?

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1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on March 30th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! That's good that you see adult worms, it means the medication is working! I would have your Vet recheck a stool sample in 3 weeks to be sure no eggs are present. The 2 doses may be enough to kill the adult worms. Also he will be started on heartworm prevention that also is a monthly dewormer when you bring him to your Vet to continue vaccines. Have a great weekend!

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