Nitrofurantoin — $0 with Membership

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About Nitrofurantoin

Nitrofurantoin is a commonly prescribed antibiotic, crucial for treating bothersome urinary tract infections (UTIs). When a UTI strikes, quick and affordable treatment is essential. At TheDrugClub, we believe everyone deserves access to vital medications without financial stress. Discover how our membership can make managing your health, including securing nitrofurantoin, simpler and more affordable.

Urinary tract infections (UTIs) are a common and often uncomfortable ailment, affecting millions of people annually. When you experience symptoms like frequent urination, burning, or discomfort, your doctor might prescribe nitrofurantoin, a powerful antibiotic specifically designed to combat these infections.

What Nitrofurantoin Treats

Nitrofurantoin is primarily used to treat and prevent urinary tract infections caused by susceptible bacteria. It's highly effective against acute uncomplicated UTIs, which are infections of the bladder (cystitis). Unlike some broader-spectrum antibiotics, nitrofurantoin concentrates its action directly in the urinary tract, making it an excellent targeted treatment for these specific infections. It's not typically used for kidney infections or other types of bacterial infections elsewhere in the body, as its efficacy is localized to the urinary system.

How Nitrofurantoin Works

This antibiotic works by interfering with the bacterial processes necessary for survival. Once absorbed, nitrofurantoin is rapidly excreted into the urine, where it becomes active. Inside bacterial cells, it's converted into reactive intermediates that damage several bacterial components, including DNA, RNA, and proteins. This action inhibits bacterial growth and reproduction, and at higher concentrations, it can even kill the bacteria. Because it acts in multiple ways and is concentrated in the urine, bacteria have a harder time developing resistance to nitrofurantoin, making it a reliable choice for UTI treatment.

Typical Costs of Nitrofurantoin

Without insurance or a prescription savings program, the cost of nitrofurantoin can vary. A typical 7-day course of generic nitrofurantoin (e.g., nitrofurantoin macrocrystals or monohydrate/macrocrystals) might range anywhere from $10 to $50, depending on the pharmacy, dosage, and whether you're getting the immediate-release or extended-release formulation. Brand-name versions like Macrobid or Macrodantin can be significantly more expensive, often exceeding $100 for a course of treatment. These costs can add up, especially if you experience recurring UTIs or have a high deductible insurance plan

The information above is for educational purposes only and does not constitute medical advice. Consult your healthcare provider before making medication decisions.

What Nitrofurantoin is approved for (FDA label)

Nitrofurantoin capsules (monohydrate/macrocrystals) are indicated only for the treatment of acute uncomplicated urinary tract infections (acute cystitis) caused by susceptible strains of Escherichia coli or Staphylococcus saprophyticus . Nitrofurantoin is not indicated for the treatment of pyelonephritis or perinephric abscesses. To reduce the development of drug-resistant bacteria and maintain the effectiveness of nitrofurantoin capsules (monohydrate/macrocrystals) and other antibacterial drugs, nitrofurantoin capsules (monohydrate/macrocrystals) should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

Source: Read the full FDA label on DailyMed. Label effective date: September 8, 2026.

Excerpt from the FDA-approved prescribing information. This is not medical advice; talk to your doctor or pharmacist.

Adverse reactions for Nitrofurantoin (FDA label)

In clinical trials of nitrofurantoin capsules (monohydrate/macrocrystals), the most frequent clinical adverse events that were reported as possibly or probably drug-related were nausea (8%), headache (6%), and flatulence (1.5%). Additional clinical adverse events reported as possibly or probably drug-related occurred in less than 1% of patients studied and are listed below within each body system in order of decreasing frequency: Gastrointestinal: Diarrhea, dyspepsia, abdominal pain, constipation, emesis Neurologic: Dizziness, drowsiness, amblyopia Respiratory: Acute pulmonary hypersensitivity reaction (see WARNINGS ) Allergic: Pruritus, urticaria Dermatologic: Alopecia Miscellaneous: Fever, chills, malaise The following additional clinical adverse events have been reported with the use of nitrofurantoin: Gastrointestinal: Sialadenitis, pancreatitis. There have been sporadic reports of pseudomembranous colitis with the use of nitrofurantoin.

Source: FDA prescribing information (DailyMed). Set ID: 4553ccc1-0bad-4c75-aae2-1a1c87bc8db0. SPL document ID: 5afbe907-3372-2a6a-e063-6294a90a4554. Label effective date: September 8, 2026. Read the full label.

Excerpt from the FDA-approved prescribing information. This is not medical advice; talk to your doctor or pharmacist.

Contraindications for Nitrofurantoin (FDA label)

Anuria, oliguria, or significant impairment of renal function (creatinine clearance under 60 mL per minute or clinically significant elevated serum creatinine) are contraindications. Treatment of this type of patient carries an increased risk of toxicity because of impaired excretion of the drug. Because of the possibility of hemolytic anemia due to immature erythrocyte enzyme systems (glutathione instability), the drug is contraindicated in pregnant patients at term (38 to 42 weeks gestation), during labor and delivery, or when the onset of labor is imminent. For the same reason, the drug is contraindicated in neonates under one month of age. Nitrofurantoin capsules (monohydrate/macrocrystals) are contraindicated in patients with a previous history of cholestatic jaundice/hepatic dysfunction associated with nitrofurantoin. Nitrofurantoin capsules (monohydrate/macrocrystals) are also contraindicated in those patients with known hypersensitivity to nitrofurantoin.

Source: FDA prescribing information (DailyMed). Set ID: 4553ccc1-0bad-4c75-aae2-1a1c87bc8db0. SPL document ID: 5afbe907-3372-2a6a-e063-6294a90a4554. Label effective date: September 8, 2026. Read the full label.

Excerpt from the FDA-approved prescribing information. This is not medical advice; talk to your doctor or pharmacist.