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My dog got diarrhea and threw up after peanut butter with meds.

Updated On September 23rd, 2025

Pet's info: Dog | Jack Russell Terrier | Female | spayed | 7 years and 9 months old | 23 lbs

I went to the vet yesterday and they gave me medication for thyroid. It's levo thyroxine 0.3 I gave her a pill with peanut butter is around 12 noon yesterday. And four hours later she was pooping all over the living room and this happened throughout the night I did not sleep the stool was soft and she also threw up

4 Answers

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on April 29th, 2017

Poor Bella! The peanut butter may have caused the diarrhea. Withhold food for 24 hours. Allow small amounts of water or unflavored PediaLyte. Resume feeding a bland diet in small, frequent amounts. Feed bland until the stool is normal then transition slowly to her regular diet. In the future, use something other than peanut butter to get her to take her pills. Cheese may work or a bit of hot dog. Use a small amount of either, just enough to hide the pill. You can also buy Pill Pockets from your vet or from Petco. These are convenient treats used to give medication. If the diarrhea doesn't resolve, see your veterinarian for an exam.

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    Answered By Penelope Graben, DVM

    Veterinarian

    Published on July 21st, 2018

    Hello! Glad to hear Bella is doing better! I generally recommend feeding only the bland diet for a total of 3-5 days, generally until the stool is formed. Then, slowly transition her back to her normal diet over one week so that her GI tract can re-adjust to her normal food. :) I hope this is helpful! Thanks for using Petco Pet Education Center, formerly Petcoach!

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    Answered By Dr. Strydom, DVM

    Veterinarian

    Published on August 21st, 2017

    Hi there. I'm not sure how long ago she ate the cookies but that small amount of chocolate chips should not really harm her. It is the unsweetened baker's chocolate that is the huge problem for dogs. When this happens the diarrhea is usually self-limiting meaning it will go away on it's own within a day or so. I would give her 3 teaspoons of pepto bismol but I would only give the one dose - it contains aspirin and can cause ulcers in the stomach if given too much. You may also want to give her some probiotics. I suggest Fortiflora but you can use any kind that is made for dogs. I hope this helps. Best wishes and I hope Nova is back to her normal self soon!

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    Answered By Maria DVM

    Veterinarian

    Published on June 19th, 2018

    I would recommend giving boiled chicken and rice. If the diarrhea doesn't resolve within a day or two of that I would call your vet. They can provide medication to help it resolve a lot faster. I would also recommend bringing Maggie if she starts vomiting, not eating or there is blood in her stool. Thank you for using Petco Pet Education Center, formerly Petcoach.

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