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My dog has loose stools after deworming. Is it normal? What helps?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | unneutered | 2 years and 11 months old | 65 lbs

Hello, I got my dog dewormed (Drontal Plus) 5 days ago and It’s passing loose stools since then, is it normal? I’m giving him probiotic/prebiotic (Synbiotic D-C), is there anything else I could do to relieve this symptom? Thank you!

2 Answers

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on May 11th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Motaz! It isn't uncommon for diarrhea to occur after deworming. Also the worms can cause diarrhea. I like that you started a probiotic. I would also start a bland diet of boiled chicken or hamburger with rice. Feed 1 cup per 20 lbs per day until 2 normal stools. If the diarrhea continues through the weekend I recommend you have tour Vet do an exam Monday and get medications. I wish you and Motaz the nest!

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Other Answers

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    Answered By Dr. Elizabeth

    Veterinarian

    Published on January 24th, 2020

    I recommend to call your veterinarian. It's possible the loose stool is due to the worms, the medication or the spay procedure (the most common side effects of sedation are vomiting and diarrhea). Diarrhea that continues beyond 2 days can allow a bacteria shift which can continue the diarrhea. The vet may want to treat the diarrhea now. A bland diet may also help. I hope this helps.

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