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Is 600mg Gabapentin safe for my 90lb senior dog with arthritis?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 13 years and 2 months old | 96 lbs

My dog was prescribed 600mg/day of Gabapentin as an adjunct to Meloxicam for arthritic knee pain. I read that 1.4 mg per pound of weight is the standard dose for dogs for pain. 600 mg seems excessive. What in your opinion is the standard dose for a 90-lb. male lab mix who’s 13 years old (a senior dog)? Thanks.

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2 Answers

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on July 16th, 2019

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Jack. For pain control in dogs, the dose can go as high at 5mg per pound, which would be 450mg. But it can be used up to 10mg per pound for dogs with seizures, so this isn't an overdose. It may be he needs the extra pain control. but I would speak to your vet about your concerns. Best of luck.

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on February 17th, 2020

    So the dosage for gabepentin is 5-10mg/kg three times a day, so if Riley is getting 600mg total per day, this is within the normal dose. Some patients can be put up to as high as 40mg/kg a day, which would mean that his dose is within the range.

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