3 doctors weighed in:

How long does it take for antibiotics to start relieving symptoms of a kidney infection?

3 doctors weighed in
Dr. Michael Mirochna
Family Medicine
2 doctors agree

In brief: 1-2 days

Is this a bladder infection or a true kidney infection (pyelonephritis)? If bladder infection, the symptoms include frequency burning and urgency.
With pyelonephritis, people are sick, fever nausea vomiting and severe side pain. It can take a day or two to get better with bladder infection, if not get back to the doctor, you may need a different antibiotic, if pyelonephritis, talk to doc today.

In brief: 1-2 days

Is this a bladder infection or a true kidney infection (pyelonephritis)? If bladder infection, the symptoms include frequency burning and urgency.
With pyelonephritis, people are sick, fever nausea vomiting and severe side pain. It can take a day or two to get better with bladder infection, if not get back to the doctor, you may need a different antibiotic, if pyelonephritis, talk to doc today.
Dr. Michael Mirochna
Dr. Michael Mirochna
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