Published: June 5, 2024

Macrobid for Urinary Tract Infection: How Effective Is It?

Written by QuickMD Publications Team

1 minute

Microscope for examining UTI results after taking Macrobid

Macrobid (nitrofurantoin) is an antibiotic commonly used to treat urinary tract infections (UTIs). However, its effectiveness depends on which part of the urinary tract is infected. While Macrobid is suitable for some bladder infections, it is ineffective against kidney infections.

Macrobid (Nitrofurantoin): Effectiveness Against Common Bacteria

Nitrofurantoin is effective against the usual bacteria causing urinary bladder infections:

  • Escherichia coli
  • Enterococci
  • Klebsiella
  • Staphylococcus saprophyticus
  • Enterobacter

Antibiotic Resistance

Antibiotics can lose effectiveness over time as bacteria evolve defenses against them. Fortunately, Macrobid remains effective against most bacterial bladder infections. In 2017, the United Kingdom’s National Institute for Health and Care Excellence recommended Macrobid as a replacement for Bactrim because a study found only 3% resistance to Macrobid.

Dosage

Nitrofurantoin is taken as an oral tablet in a dose of 100 mg twice a day for seven days. It should be taken with food to avoid stomach upset. Did you know?QuickMD can treat a urinary tract infection in the comfort of your own home and prescribe Macrobid online.

Disclaimer

Articles on this website are meant for educational purposes only and are not intended to replace professional medical advice, diagnosis or treatment. Do not delay care because of the content on this site. If you think you are experiencing a medical emergency, please call your doctor immediately or call 911 (if within the United States). This blog and its content are the intellectual property of QuickMD LLC and may not be copied or used without permission.

QuickMD has strict referencing policies and relies on reputable sources, including peer-reviewed research, clinical guidelines, medical organizations, and government and public health agencies, among others. Learn more about how we ensure accuracy in our content by reading our editorial guidelines.

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