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
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.
1Pet Parents found this answer helpful
Book an appointment with the pros – our expert vets are here to help.