3 doctors weighed in:
How long does it take the antibiotic to work for a uti?
3 doctors weighed in

Dr. William Lizarraga
Internal Medicine
2 doctors agree
In brief: Hours to days
The antibiotic should begin to work - that is, kill bacteria - within hours.
By a day or so, symptoms should be improving. Depending on how complicated the infection is and how long your course of antibiotics is for, it should be cleared within 3-14 days.

In brief: Hours to days
The antibiotic should begin to work - that is, kill bacteria - within hours.
By a day or so, symptoms should be improving. Depending on how complicated the infection is and how long your course of antibiotics is for, it should be cleared within 3-14 days.
Dr. William Lizarraga
Dr. William Lizarraga
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