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Nitrofurantoin

Common Brand Names: Macrobid, Furadantin, Microdantin, Furalan

Proper Use & Dosage

Medically reviewed by Jessica Swirble, PharmD
Last updated on 5/9/2024

Drug Information | Side Effects | Use & Dosage | Request a Prescription

What is the typical starting dose for nitrofurantoin?

Nitrofurantoin is available in the following forms:

  • Oral capsules (25 mg, 50 mg, 100 mg)

The typical starting dose of nitrofurantoin varies depending on the type of infection being treated, the severity of the infection, and individual patient factors. It is important to follow your healthcare provider's instructions regarding dosage and administration.

For uncomplicated urinary tract infections (UTIs), the typical starting dose may be:

  • 100 mg taken orally twice a day for 7 days.

For prophylaxis (prevention of recurrent UTIs), your healthcare provider may recommend lower doses taken daily or several times a week, depending on your specific situation.

Your healthcare provider will determine the most appropriate dose and duration of treatment based on your medical history, current medications, and response to the medication.

Nitrofurantoin should be taken exactly as prescribed by your healthcare provider. Do not exceed the recommended dose or duration of treatment without consulting your provider.

If you have any questions about your dosage, contact your healthcare provider. If you want to talk to a provider right away, book an online doctor appointment on Sesame to discuss your concerns.

What should I do if I miss a dose?

If you miss a dose, take it as soon as you remember it. If it's almost time for another dose of nitrofurantoin, skip the missed dose and take your next dose as scheduled. Do not take or apply a double dose of nitrofurantoin.

What do I do if I'm feeling better?

Do not discontinue or alter your nitrofurantoin dosage without consulting with your healthcare provider. Follow your healthcare provider's instructions regarding dosing and other recommendations for taking nitrofurantoin.

How should I store nitrofurantoin?

Store nitrofurantoin as directed by your healthcare provider or pharmacist. Proper storage is essential to maintain the medication's effectiveness. nitrofurantoin should be stored at room temperature, away from excessive heat, light, and moisture.

Keep the medication out of the reach of children and ensure that the container is tightly closed.