Nitrofurantoin is an antibiotic used to treat urinary tract infections caused by certain bacteria. It works by stopping the growth of bacteria. This antibiotic only treats bacterial infections. It will not work for viral infections.

Nitrofurantoin FAQ


What is Nitrofurantoin used for?

Nitrofurantoin is used to treat urinary tract infections.

How does Nitrofurantoin work?

Nitrofurantoin stops the growth of bacteria that cause urinary tract infections.

What are the common side effects of Nitrofurantoin?

Common side effects may include nausea, vomiting, loss of appetite, and rust-colored or brownish urine.

How long does Nitrofurantoin take to work?

Symptoms may start to improve within a few days, but it's important to finish the full course of medication as prescribed.

Can I drink alcohol while taking Nitrofurantoin?

It is best to avoid alcohol while on Nitrofurantoin as it may increase the risk of side effects.

Is Nitrofurantoin safe during pregnancy?

Nitrofurantoin is generally not recommended during the first 3 months of pregnancy.

Can I buy Nitrofurantoin without a prescription?

No, Nitrofurantoin is a prescription-only medication and should be taken under the guidance of a healthcare professional.

What is the usual dosage of Nitrofurantoin?

The usual adult dose is 50-100 mg four times a day for 7 days for uncomplicated urinary tract infections.

What should I do if I miss a dose of Nitrofurantoin?

Take the missed dose as soon as you remember, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Is Nitrofurantoin effective against all types of bacteria?

Nitrofurantoin is effective against certain types of bacteria that commonly cause urinary tract infections, but not all types of bacteria.

Can Nitrofurantoin be used to prevent urinary tract infections?

Nitrofurantoin is sometimes prescribed to prevent recurring urinary tract infections, but the use for prevention should be carefully considered by a healthcare professional.

Are there any dietary restrictions while taking Nitrofurantoin?

There are no specific dietary restrictions, but it's important to stay hydrated and follow a balanced diet while on Nitrofurantoin.

What are the symptoms of a Nitrofurantoin overdose?

An overdose of Nitrofurantoin may cause nausea, vomiting, loss of appetite, dizziness, and weakness. Seek medical attention if an overdose is suspected.

Are there any drug interactions with Nitrofurantoin?

Inform your doctor about all the medications you are taking, including over-the-counter and prescription medicines, as well as herbal supplements, to avoid potential drug interactions with Nitrofurantoin.

How should Nitrofurantoin be stored?

Store Nitrofurantoin at room temperature, away from moisture, heat, and light. Keep it out of the reach of children.

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Information provided by Maryam Abdullahi-Mahdi. Reviewed by Prof. Vijay Sangar