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My dog ate Excedrin. What toxic symptoms should I watch for and when?

Updated On September 23rd, 2025

How long after a dog eats excedrin will it have side effects if she's going to get sick off of it

2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on September 19th, 2016

Excedrin is highly toxic to dogs due to the aspirin, caffeine, and acetaminophen in it. All three of these ingredients are toxic to dogs. You will see vomiting, and there will be other damage that may take days for symptoms to appear, such as liver damage and GI ulcers. If your dog ate excedrin, she needs to see a vet immediately. I do not know how much she ate, how much she weighs, or the strength of the pills she has eaten, so I can't say for certain how long it will take for side effects to appear. I can say for certain she does need to see a vet now because this drug is toxic to dogs.

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19Pet Parents found this answer helpful

Other Answers

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    Answered By Angel Alvarado, LVT

    Licensed Veterinary Technician

    Published on

    Symptoms usually become apparent within 2-24 hours of ingestion. They can include vomiting, lethargy, difficulty breathing, brown gums (not pink), abdominal pain or jaundice. If you believe your dog ingested acetaminophen, seek veterinary attention immediately.

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