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Last Updated: March 19, 2026

nitrofurantoin; nitrofurantoin, macrocrystalline - Profile


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What are the generic drug sources for nitrofurantoin; nitrofurantoin, macrocrystalline and what is the scope of patent protection?

Nitrofurantoin; nitrofurantoin, macrocrystalline is the generic ingredient in two branded drugs marketed by Almatica, Alvogen, Amneal Pharms, Aurobindo Pharma, Chartwell Rx, Inventia, Mankind Pharma, Omsav Pharma, Ranbaxy Labs Ltd, Sandoz, Sunny, and Watson Labs Inc, and is included in twelve NDAs. Additional information is available in the individual branded drug profile pages.

Summary for nitrofurantoin; nitrofurantoin, macrocrystalline
US Patents:0
Tradenames:2
Applicants:12
NDAs:12

US Patents and Regulatory Information for nitrofurantoin; nitrofurantoin, macrocrystalline

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Almatica MACROBID nitrofurantoin; nitrofurantoin, macrocrystalline CAPSULE;ORAL 020064-001 Dec 24, 1991 AB RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Alvogen NITROFURANTOIN (MONOHYDRATE/MACROCRYSTALS) nitrofurantoin; nitrofurantoin, macrocrystalline CAPSULE;ORAL 215002-001 Jul 20, 2022 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Amneal Pharms NITROFURANTOIN (MONOHYDRATE/MACROCRYSTALS) nitrofurantoin; nitrofurantoin, macrocrystalline CAPSULE;ORAL 207372-001 May 15, 2017 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Aurobindo Pharma NITROFURANTOIN (MONOHYDRATE/MACROCRYSTALS) nitrofurantoin; nitrofurantoin, macrocrystalline CAPSULE;ORAL 209225-001 Mar 30, 2023 AB RX No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Expired US Patents for nitrofurantoin; nitrofurantoin, macrocrystalline

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Almatica MACROBID nitrofurantoin; nitrofurantoin, macrocrystalline CAPSULE;ORAL 020064-001 Dec 24, 1991 4,772,473 ⤷  Get Started Free
Almatica MACROBID nitrofurantoin; nitrofurantoin, macrocrystalline CAPSULE;ORAL 020064-001 Dec 24, 1991 4,798,725 ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

Nitrofurantoin and Macrocrystalline Nitrofurantoin: Investment Scenario and Fundamentals Analysis

Last updated: February 3, 2026

Overview

Nitrofurantoin is an antibiotic primarily used for urinary tract infections. Marketed in forms such as macrocrystalline nitrofurantoin, it remains a core drug with steady demand. Investment prospects depend on patent status, regulatory environment, market trends, and competitive landscape.

Market Size and Segments

  • Global urinary tract infection (UTI) treatment market valued at approximately USD 4.2 billion in 2021.
  • Nitrofurantoin accounts for roughly 20% of this market, primarily in North America and Europe.
  • Macrocrystalline formulations constitute about 60% of nitrofurantoin sales owing to better tolerability and sustained-release properties.

Regulatory Status

  • Patent expiration for proprietary formulations: 2010-2015 for various markets.
  • Approved indications are generally broad; exceptions exist for specific formulations.
  • No recent major regulatory bans or restrictions; however, concerns over resistance and side effects influence prescribing.

Manufacturing and Supply Chain

  • Production largely involves generic pharmaceutical companies.
  • Raw materials: Nitrofurantoin synthesized via multistep chemical processes, with generic manufacturers dominating supply.
  • Supply chain risks include raw material shortages and regulatory changes affecting manufacturing processes.

Patent and Exclusivity Landscape

  • No recent patent protections on existing formulations; this led to increased generic competition.
  • Limited opportunities for exclusive rights post-patent expiration.

Competitive Landscape

  • Market participants: Teva, Pfizer, Sun Pharmaceutical, and numerous generics.
  • Price erosion driven by competition has kept profit margins stable but limited upward potential.
  • Entry barriers remain low, increasing competitiveness.

Clinical Development and Resistance Trends

  • Nitrofurantoin retains efficacy as a first-line UTI treatment.
  • Concerns exist regarding antimicrobial resistance, though current data suggest maintained activity.
  • No significant pipeline or formulation innovations currently announced for macrocrystalline forms.

Investment Risks

  • Resistance development could diminish drug utility.
  • Regulatory environments or safety concerns could restrict usage.
  • Market share erosion due to generics and new antibiotics.

Financial Performance Indicators

  • Stable volume sales due to consistent demand for uncomplicated UTIs.
  • Margins compressed due to generic price competition.
  • Potential for growth limited unless newer formulations or indications emerge.

Strategic Opportunities

  • Development of extended-release formulations to differentiate offerings.
  • Focus on niche markets such as complicated UTIs or resistant strains.
  • Partnership with biotech firms exploring combination therapies or novel delivery mechanisms.

Conclusion

Nitrofurantoin, especially macrocrystalline formulations, exhibits stable demand within its market segment. Current investment outlook is cautious, dominated by generic competition and resistance issues. Long-term growth may depend on product innovation or expansion into unmet clinical needs.


Key Takeaways

  • Nitrofurantoin remains a staple antibiotic for UTIs, with macrocrystalline forms dominating sales.
  • Patent expirations have led to widespread generic manufacturing, suppressing prices and margins.
  • Resistance and safety profile considerations influence future market dynamics.
  • Opportunities exist in formulation innovation and niche indications.
  • The market faces pressure from generic competition, with limited upside without new product development.

Frequently Asked Questions

1. What is the current patent status of nitrofurantoin?
All key patents on nitrofurantoin and macrocrystalline formulations have expired by 2015, resulting in widespread generic manufacturing.

2. Are there ongoing clinical trials or developments for nitrofurantoin?
Research is limited; current focus remains on resistance management rather than new formulations. No significant new clinical trials are publicly confirmed.

3. What are the main competitive threats?
Generic manufacturers dominate supply, and rising resistance may reduce future efficacy. New antibiotics targeting UTIs could further threaten nitrofurantoin's market share.

4. How do safety concerns impact market dynamics?
While generally well-tolerated, reports of pulmonary and hepatic adverse effects influence prescribing, especially for long-term use.

5. What are the growth prospects for nitrofurantoin?
Limited without formulation innovations or expansion into resistant infection niches. The primary growth avenue is in specialized or delayed-release formulations.


References

  1. MarketWatch, “UTI Treatment Market Size & Share,” 2022.
  2. FDA, “Drug Approvals and Labeling,” 2022.
  3. European Medicines Agency, “Summary of Product Characteristics,” 2021.
  4. IQVIA, “Global Generic Pharmaceutical Market Data,” 2022.
  5. CDC, “Antibiotic Resistance Threats,” 2022.

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