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My Chihuahua ate Naproxen and is throwing up. What should I do right now?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua (Smooth Coat) | Female | unspayed | 1 year and 6 months old | 6 lbs

I have a 6lb Chihuahua and she ate a piece of a Naproxen 500 mg. About a quarter of it she ate. She's been throwing up! She is drinking water though. Tried to give her mashed up banana. She ate about a quarter of it ,then threw it up 5 minutes later. What can I do for her, THANK YOU!

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on November 9th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This is a very high dose that is in the toxic range for dogs. This can be a very serious toxicity. Naproxen at that high of a dose can result in kidney failure, liver failure and gastrointestinal ulcers, among other possible effects. This warrants a visit to a veterinarian as soon as possible for further assessment and treatment. Depending on when this was ingested, a decontamination protocol can be started. Usually these patients are kept in hospital on fluids, supportive care and very close monitoring. I highly recommend you have her evaluated by a veterinarian as soon as possible. Hopefully everything goes well. Good luck and have a good night!

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