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How long should my dog take sulfamethoxazole for her condition?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 2 years and 3 months old | 15 lbs

How long can a dog take sulfamethoxazole

1 Answer

Most Helpful Answer

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Answered By Amber Da Silva, DVM

Veterinarian

Published on September 7th, 2017

It really depends on what she is being treated for. Some treatments are 7 days, some may last up to 4 weeks. If she has been on it for that long and still has not improved, I would consider talking to your vet about doing a culture to see what type of infection it is and what antibiotic will be most effective at treating it.

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