Nitrofurantoin

Nitrofurantoin
4.319 ratingsReviews
Generic:
Nitrofurantoin
Indications:
urinary tract infections
Analogs:
Macrobid Macrodantin Furadantin Trimethoprim Co Trimoxazole Fosfomycin Pivmecillinam Cephalexin Amoxicillin Clavulanate Cefpodoxime Ciprofloxacin
Nitrofurantoin Mono/MCR 50 mg and 100 mg are used to treat uncomplicated UTIs (bladder infections). Not for kidney infections (pyelonephritis).
In stock: 11 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Nitrofurantoin 50 mg

Quantity Price per tablet You save Total price
100 $1.22 - $122.00
200 $1.04 $37.00 $207.00
300 $0.97 $75.00 $291.00
400 $0.94 $113.00 $375.00
500 $0.92 $150.00 $460.00
600 $0.90 $192.00 $540.00

Nitrofurantoin 100 mg

Quantity Price per tablet You save Total price
100 $1.18 - $118.00
200 $1.01 $34.00 $202.00
300 $0.94 $72.00 $282.00
400 $0.90 $112.00 $360.00
500 $0.88 $148.00 $442.00
600 $0.88 $179.00 $529.00

Manufacturers

Almatica PharmaAspen Pharmacare AustraliaMercury Pharma Group

Payment & Shipping

Package Example

Your order is carefully packed and ships within 24 hours. Here is what a typical package looks like.

Sized like a regular personal letter (9.4x4.3x0.3 inches), with no indication of what is inside.

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Shipping Times
Shipping MethodEstimated delivery
Express Free for orders over $300.00Estimated delivery to the U.S.: 4-7 days
Standard Free for orders over $200.00Estimated delivery to the U.S.: 14-21 days
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Discount Coupons

  • Independence Day - July 4, 2026 10% JULY410
  • Labor Day - September 7, 2026 7% LABOR07
  • Thanksgiving - November 26, 2026 9% THANKS09

Brand Names

Also known as (by country):
CountryBrand Names
United States
Macrobid Macrodantin

FAQ

In the United States, nitrofurantoin is a prescription-only medicine when purchased from local pharmacies. Our store policy allows customers to order Nitrofurantoin capsules without submitting a prescription, and the product can be sent by mail.

Do not save leftover capsules for a future urinary infection or give them to someone else. Use an authorized medication take-back program when available; a pharmacist can also advise on local disposal options.

Nitrofurantoin is available in FDA-approved prescription drug products in the United States. However, approval and labeling are specific to the manufacturer, strength, and dosage form, so the regulatory status of the exact product supplied cannot be confirmed from the catalog information alone.

Nitrofurantoin is a nitrofuran antibiotic used to treat susceptible uncomplicated urinary tract infections, especially infections of the bladder. It is not used for yeast infections and is generally not appropriate for kidney infections because it does not achieve adequate tissue levels in the kidneys.

Take Nitrofurantoin capsules by mouth exactly as directed for the prescribed treatment course. Taking doses with food improves absorption and can reduce stomach upset; swallow the capsules with liquid. The dose and length of treatment depend on the infection, capsule formulation, kidney function, and other patient factors.

Description

Note: Images in the description are provided for informational purposes and may differ from the actual appearance of the product. Please refer to the product name, strength, ingredients, and dosage form.

What Furadantin Tablets are and what they are used for

Nitrofurantoin (the active substance in Furadantin Tablets) is an antibiotic.

It is used to treat and help prevent urinary tract infections (UTIs) of the lower urinary tract (bladder) caused by susceptible bacteria. Nitrofurantoin is not indicated for kidney infections such as pyelonephritis.

Furadantin

Before you take Furadantin Tablets

Do not take Furadantin Tablets and talk to your doctor if:

  • you are allergic (causing itching, reddening of the skin, or difficulty breathing) to nitrofurantoin or any of the ingredients of Furadantin Tablets; or to other medicines containing nitrofurantoin;
  • you have anuria, oliguria, or significant impairment of kidney function (ask your doctor if you are not sure);
  • you have a previous history of cholestatic jaundice/hepatic dysfunction associated with nitrofurantoin;
  • you are at term (38 to 42 weeks gestation), during labor or delivery, or when the onset of labor is imminent because there is a risk that it might affect the baby. Tell your doctor if you are not sure about any of the above.

Take special care with Furadantin Tablets and speak to your doctor or pharmacist before taking the tablets if:

  • you have diabetes;
  • you are suffering from any illness causing severe weakness;
  • you have anemia (a decrease in red blood cells causing pale skin, weakness, and breathlessness), a lack of vitamin B, or abnormal levels of salts in your blood (your doctor will be able to advise you);
  • you have a history of allergic reactions.

The above conditions may increase the chance of developing a side effect that results in nerve damage, causing altered sensation and pins and needles.

  • you lack an enzyme (body chemical) called glucose-6-phosphate dehydrogenase, which causes your red blood cells to be more easily damaged (your doctor will know);
  • you have any disease of the lungs, liver, or nervous system. If you need to take Furadantin Tablets for a number of months, your doctor may want to regularly check how your lungs and liver are working.

Taking other medicines

Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription.

  1. Antacids for indigestion that contain magnesium trisilicate;
  2. Medicines for gout (e.g., probenecid or sulfinpyrazone).

If you are in doubt about any medicines, ask your doctor or pharmacist.

Furadantin Tablets may interfere with the results of some tests for glucose in the urine (for example, Benedict's or Fehling's copper reduction tests).

Taking Furadantin Tablets with food and drink

Furadantin Tablets should be taken at mealtimes with food or milk. This will help to avoid stomach upset and may improve absorption.

Pregnancy and breast-feeding

Ask your doctor or pharmacist for advice before taking any medicine. Furadantin Tablets are not recommended at term (38 to 42 weeks gestation), during labor and delivery, or when the onset of labor is imminent. If you want to breastfeed, please consult your doctor first; breastfeeding is not recommended for infants less than one month of age or with glucose-6-phosphate dehydrogenase (G6PD) deficiency.

Driving and using machines

Furadantin Tablets may cause dizziness and drowsiness. Do not drive or operate machinery if you are affected until such symptoms go away.

Important information about some of the ingredients in Furadantin® Tablets

This medicine contains lactose and sucrose (sugars). If you have been told by your doctor that you are intolerant to some sugars and have to avoid them, contact your doctor before taking this medicine.

How to take Furadantin Tablets

Follow your doctor's instructions exactly and complete the course of treatment even if you feel better. Check with your doctor or pharmacist if you are not sure. Do not forget to take your medicine. Tablets should be swallowed whole. Do not crush or chew.

Adults

The normal dosage depends on the type of infection you have, and instructions should be written on the label provided by the pharmacist. Consult your pharmacist or doctor if these instructions are not clear. The usual doses are:

  • For treatment of infections: 50 mg or 100 mg four times a day for 7 days (as prescribed).
  • For prevention of further infections: 50 mg or 100 mg at bedtime (as prescribed).

Children 1 month of age and older

The dose depends on the child's weight and will be provided by your doctor. Follow your doctor's instructions exactly.

Children younger than 1 month of age should not take Furadantin Tablets.

Medical checks

Your doctor will watch carefully for any effects on the liver, lungs, blood, or nervous system.

Furadantin Tablets may interfere with the results of some tests for glucose in the urine.

If you take more Furadantin Tablets than you should

Consult your doctor or pharmacist immediately or go to the emergency department of the nearest hospital. Always take any leftover tablets with you, as well as the container and label, so that the medical staff know what you have taken.

If you forget to take Furadantin Tablets

Do not worry. If you remember later on that day, take that day's dose as usual. If you miss a whole day's dose, take the normal dose the next day. Do not take a double dose to make up for a forgotten tablet. If you are not sure, ask your doctor or pharmacist.

If you stop taking Furadantin Tablets

Your doctor will tell you how long to take the treatment. Do not stop earlier than you are told, even if you feel better.

If you have any further questions on the use of this product, ask your doctor or pharmacist.

Possible side effects

Like all medicines, Furadantin Tablets can cause side effects, although not everybody gets them. Most are mild and disappear when you stop taking Furadantin Tablets.

All medicines can cause allergic reactions, although serious allergic reactions are rare. If you notice any sudden wheeziness, difficulty breathing, swelling of the eyelids, face or lips, rash, or itching (especially affecting your whole body), stop taking your medicine and see a doctor immediately. If you experience any of the side effects detailed below, stop taking Furadantin Tablets and consult your doctor.

Your lungs may react to Furadantin Tablets. This may develop quickly, within a week of starting treatment, or very slowly, especially in elderly patients. This may produce fever, chills, cough, and shortness of breath.

Jaundice

Inflammation of the liver may cause yellowing of the skin or whites of the eyes.

The nerves outside the spinal cord may be affected, causing changes to the sense of feeling and the use of muscles. In addition, headache, extreme changes of mood or mental state, confusion, weakness, and blurred vision may occur. These effects may be severe and, in some instances, irreversible.

Raised pressure in the skull

This may cause severe headaches.

Please note that while taking Furadantin Tablets, your urine may become dark yellow or brown. This is normal and not a reason to stop taking the medicine. Other side effects include:

  • Feeling sick (nausea) and headache.
  • Diarrhea.
  • Loss of appetite, stomach ache, and being sick (vomiting).
  • Dizziness, drowsiness.
  • Blood cells have been affected in some patients. This may result in bruising, delayed clotting of the blood, sore throat, fever, anemia, and susceptibility to colds or persistent cold.
  • A variety of skin rashes or reactions have occurred in some patients. These may appear as flaking skin, a red rash, or fever accompanied by rapid heart rate and a severe rash with blistering. Other reactions may include inflammation of the salivary glands (causing facial pain), inflammation of the pancreas (causing severe abdominal pain), and joint pain.
  • Short-term hair loss.
  • Urinary infection by germs that are not sensitive to Furadantin Tablets.

If any of the side effects become serious, or if you notice any side effects not listed in this leaflet, please tell your doctor or pharmacist.

Remember

This medicine is only for you. Only a doctor can prescribe it for you. Never give this medicine to someone else. It could harm them, even if their symptoms seem the same as yours.

How to store Furadantin Tablets

Keep out of the reach and sight of children.

Store at 68°F to 77°F (20°C to 25°C). Store in the original, tight, light-resistant container to protect from light and moisture.

Do not use Furadantin Tablets after the expiry date stated on the carton (EXP). The expiry date refers to the last day of that month.

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.

Medically reviewed by
Brian Holtry
MD, infectious diseases specialist and medical writer
Updated August 11, 2026

Customer questions

Asked by Melissa A, Charlotte, United States

I want to keep this on hand until my next trip. How can I tell whether the Nitrofurantoin will have enough shelf life left when it arrives?

Answered by Support team

The exact expiration date varies by the package supplied and is printed on its label or carton. Check that date when the order arrives and store the capsules as labeled.

Asked by Derrick, Nashville, United States

Can Nitrofurantoin capsules be mailed to Nashville without being ruined during normal transit?

Answered by Support team

Capsules can normally travel by mail when they are appropriately packed and kept protected from moisture and light. After delivery in Nashville, check that the package is intact and keep the capsules at 68°F to 77°F in a tightly closed, light-resistant container.

Asked by Alicia, San Diego, United States

Before I order, what package quantities can I choose for Nitrofurantoin capsules?

Answered by Support team

The catalog offers packages of 100, 200, 300, 400, 500, or 600 capsules. Select the package quantity that matches the option shown when ordering.

Asked by Robert, Chicago, United States

I previously used Nitrofurantoin in a different form. What form do you sell?

Answered by Support team

We sell Nitrofurantoin as oral capsules, available in 50 mg and 100 mg strengths. Other dosage forms are not listed for this product.

Asked by Jason, Columbus, United States

I drive for work and will be starting Nitrofurantoin. Is it okay to drive after taking a dose?

Answered by Support team
Medical reviewed by Donna Brettler

Nitrofurantoin can cause dizziness or drowsiness in some people. Avoid driving or operating machinery until you know how it affects you, and do not drive if you feel dizzy, sleepy, or unwell.

Product specifications

Active ingredientNitrofurantoin
Drug classNitrofuran antibiotic
Dosage formCapsules
Available strengths50 mg, 100 mg
Route of administrationOral
StorageStore at 68°F to 77°F; excursions permitted between 59°F and 86°F. Keep in a tightly closed, light-resistant container and protect from moisture.
ATC codeJ01XE01

Regulatory information

United States: nitrofurantoin status
FDA statusNitrofurantoin is available in FDA-approved prescription drug products; approval and labeling depend on the specific product, strength, and dosage form.
Prescription statusNitrofurantoin products are prescription-only in the United States.
Official labelingCurrent FDA-submitted prescribing information and patient labeling for nitrofurantoin products can be checked in DailyMed.
Medicare coverageCoverage under Medicare Part D is plan- and formulary-specific; patients should verify coverage, cost sharing, and any utilization requirements with their plan.
Adverse-event reportingSuspected serious adverse events and product-quality problems may be reported to FDA MedWatch.

More information