TheraRadar
Data updated: May 26, 2026

NITROFURANTOIN

Infectious Disease Approved 1970-11-25

NITROFURANTOIN is indicated for the treatment of Urinary Tract Infection.

Source: FDA Label • NOVEL LABS INC • Nitrofuran Antibacterial

How NITROFURANTOIN Works

Nitrofurantoin is a multi-target antibacterial agent. It is reduced by bacterial flavoproteins (nitrofuran reductase) to reactive intermediates. These intermediates attack bacterial ribosomal proteins, DNA, RNA, and enzymes involved in aerobic energy metabolism. This non-specific bombardment of multiple vital bacterial systems inhibits protein and cell wall synthesis, leading to cell death and contributing to the low rate of bacterial resistance to the drug.

Source: FDA Label
23
Indications
--
Phase 3 Trials
55
Years on Market

NITROFURANTOIN Approval History

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Original
New Indication
New Form
Label Update
177 FDA actions from 1970 to 2025
Jul 2025 ORIGINAL
Update
Mar 2025 SUPPL
Mfg · Manufacturing (CMC)
Feb 2025 SUPPL
Label · Labeling

What NITROFURANTOIN Treats

1 indications

NITROFURANTOIN is approved for 1 conditions since its original approval in 1970. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Urinary Tract Infection
Source: FDA Label

NITROFURANTOIN Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

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Clinical Trial Registry

18 trials
Trial Sponsor ID Phase Status Title
NCT06332781 2126175 // CTR grant U54GM1156 Ph 4 completed Intravesical Gentamicin to Prevent Recurrent UTI
NCT05138822 results posted 212943 Ph 1 completed Safety, Tolerability, Pharmacokinetic and Microbiological Investigation of GSK3882347 in Female Participants With Urinary Tract Infections
NCT05274672 022-046 Ph 4 withdrawn Role of Prophylactic Postoperative Antibiotics in HoLEP
NCT07186465 microbiome MURA2024/339 Ref.2024/671 Ph 4 recruiting Microbiome-Modulating Prophylaxis RCT: Antibiotic vs Gynoflor in Postmenopausal Women With Recurrent Cystitis
NCT04959331 SCOUT IJG-SCOUT-2021 Ph 4 completed Clinical Effectiveness and Bacteriological Eradication of 4 Short-course Antibiotics for Uncomplicated UTIs in Women.
NCT04502095 I 573720 NCI-2020-04928, I 573720 Ph 4 completed Prophylactic Antibiotics for Urinary Tract Infections After Robot-Assisted Radical Cystectomy
NCT05630833 EAGLE-J results posted 214144 Ph 3 completed A Study to Investigate the Efficacy and Safety With Gepotidacin in Japanese Female Participants With Uncomplicated Urinary Tract Infection (Acute Cystitis)
NCT06709196 REINFORCE 2024-514312-27-00 2024-514312-27-00 Ph 4 recruiting Clinical Trial Testing Whether Targeted Antibiotic Prophylaxis Can Reduce Infections After Cystectomy Compared to Empiric Prophylaxis
NCT05652374 GT RACING 111802 NL76892.091.21 Ph 4 recruiting Gag Therapy for Recurrent Urinary Tract Infection Assessing Comparability to International Nitrofurantoin Gold Standard Study
NCT05519072 1889711-1 Ph 4 recruiting Use of Prophylactic Antibiotics Prior to OnabotulinumtoxinA
NCT04187144 results posted 212390 2020-000553-27 Ph 3 completed Comparative Study to Evaluate Efficacy and Safety of Gepotidacin to Nitrofurantoin in Treatment of Uncomplicated Urinary Tract Infection (UTI)
NCT04020341 results posted 204989 2018-001801-98 Ph 3 completed A Study to Evaluate Efficacy and Safety of Gepotidacin in the Treatment of Uncomplicated Urinary Tract Infection (UTI)
NCT05600023 Intracanal medication Ph 4 completed The Effectiveness of Single Antibiotic Paste Nitrofurantoin Versus Double Antibiotic Paste
NCT05254808 EXFOCY NL75841.041.20 Ph 3 terminated EXtended Use of FOsfomycin for the Treatment of CYstitis in Primary Care
NCT03299387 INSTANT 11-002887 Ph 4 withdrawn INtravesical Antimicrobial Agents v STANDard Oral Antibiotics for the Treatment of Acute UTI in Women With rUTI
NCT02727322 results posted PRO15110557 Ph 4 completed Nitrofurantoin Prophylaxis During Catheter-managed Acute Urinary Retention After Pelvic Reconstructive Surgery
NCT01450800 STOPP UTI results posted Pro00025269 3913577 Ph 4 completed Suppressive Therapy With Oral Antibiotics for Prevention of Postoperative Urinary Tract Infection (UTI)
NCT00734968 results posted 1108717 Ph 4 completed Does Treatment With Macrobid Reduce Urinary Tract Infections in Patients Receiving a Sub-Urethral Sling for Incontinence
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

NITROFURANTOIN FDA Label Details

Indications & Usage

NITROFURANTOIN is indicated for the treatment of Urinary Tract Infection.

Looking for the branded version?

NITROFURANTOIN (MONOHYDRATE/MACROCRYSTALS)

Full clinical data, patents, trials, and competitive landscape for nitrofurantoin.

See NITROFURANTOIN (MONOHYDRATE/MACROCRYSTALS)

Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.