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Ireland
A 34-year-old female asked:

How long does it take for macrodantin (nitrofurantoin) to work for a kidney infection ?

1 doctor answer4 doctors weighed in
Dr. Roy Arnold
Internal Medicine 49 years experience
Usually 24-48 hours: Meanwhile you should drink plenty of fluids and take OTC Azo for the burning on urination. Thanks for trusting HealthTap!
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Last updated Nov 28, 2017

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