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How long should my dog take sulfamethoxazole for her condition?

Updated on September 23, 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

Amber Da Silva, DVM

Answered By Amber Da Silva, DVM

Veterinarian

Published on September 7, 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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