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Puppy overdosed on dewormer, now very sleepy. Is this serious?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | 1 month and 4 days old | 8 lbs

Sir my puppy is 40 days old. LABRADOR He was giving deworming treatment using ALBENDAZOLE ORAL SUSPENSION MY VET. DOCTOR PRESCRIBED ME 0.5ML DOSE TWO TIMES A DAY. BUT MY DOG CARE TAKER. MISTAKENLY GIVEN HIM 5ML DOSE. 2 TIMES WITH 12 HR INTERVAL .MYY VET IS OUT OF TOWN SO I want u to tell me is there is any serious cause to . Be . Aware of. After that I M VERY NERVOUS RIGHT NOW My puppy just keep sleeping whole day. TODAY .AND VERY LAZY

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1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on August 18th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! In the US we do not use Albendazole in dogs or cats. If Oscar only weighs 5.5 lbs and if he was given 5mls that is 200mg of albendazole and at that dose it has been reported to cause mental dullness and decreased appetite in cats. It can also affect white and red blood cells. I don't have much information about overdoses in dogs. Stop giving him the medication. The dose of ivermectin should be ok. If he gets worse or doesn't improve he should be taken to an emergency hospital. Good luck!

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