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How long until my dog's UTI antibiotics stop the discharge?

Updated On September 23rd, 2025

Pet's info: Dog | Whippet | Female | unspayed | 3 years and 5 months old

Hi how long does it take antibiotics to work .misty has what we think is a uniary tract infection .or some sort of infection .she went for bloods and everthing was ok .she is on noroclav 250mg and is on a 7 day supply .she has had 4 so far but when looking at her vulva i can still see discharge .its not as thick or yellow as before more clear/ white .she had a blood test incase it was pyometra and her white blood cells where fine just worried about her .she is still lively and loving her food

2 Answers

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on November 9th, 2017

You should begin to see some improvement in symptoms after a few days IF the bacteria responsible is sensitive to the antibiotic. Ideally, a sterile urine sample should be collected and submitted for urinalysis and a urine culture/sensitivity panel. This second test should be able to identify the organism responsible as well as the most effective antibiotic to use in treatment.

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    Answered By Jessica Desrosiers

    Veterinary Technician

    Published on April 1st, 2020

    Without knowing how long she's been on the meds, it would be hard to say. In most cases, you will start to see symptoms resolving in a few days, however it is always best to give the entire course of antibiotics to ensure the infection is completely cleared up. In some cases, a second round of meds or switching to a prescription urinary diet may also be needed to help resolve urinary issues fully. I would follow up with your vet when the meds are complete, or if you're not seeing any improvement in symptoms at all after a few days.

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