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My dog ate naproxen accidentally. Is it toxic? Should I go to vet?

Updated On September 23rd, 2025

Pet's info: Dog | Dachshund | Male | neutered | 2 years and 4 months old

My dog ate a naproxen accidentally

3 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on July 7th, 2016

Naproxen can be extremely poisonous to dogs, and have a very low safety margin (which means it is very potent). You need to take Atticus to a vet immediately.

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10Pet Parents found this answer helpful

Other Answers

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    Answered By Jennifer Summerfield, DVM CPDT-KA

    Veterinarian, Certified Dog Trainer

    Published on

    The main side effects that we worry about with naproxen toxicity in dogs are stomach ulcers and (at higher doses) kidney damage. Unfortunately, dogs are fairly sensitive to this drug and stomach ulcers can be seen at doses of 5 mg/kg or above. I see that your dog is a dachshund, so assuming that he weight 15-20 lbs, even a single naproxen tablet could potentially be a problem. I would recommend taking him to an emergency clinic right away - if he ate it within the past couple of hours, they may be able to induce vomiting and keep any of it from being absorbed. If not, they can give him fluids and start him on GI protectants to help prevent any problems.

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    7Pet Parents found this answer helpful

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on January 17th, 2019

    He needs to be absolutely seen. Naproxen is extremely toxic. Please contact your veterinarian as I am sure they have either someone on call or they can redirect you to the local emergency clinic. The main side effects that we worry about with naproxen toxicity in dogs are stomach ulcers and (at higher doses) kidney damage.

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    1Pet Parents found this answer helpful

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