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Last Updated: April 2, 2026

FLOROPRYL Drug Patent Profile


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When do Floropryl patents expire, and what generic alternatives are available?

Floropryl is a drug marketed by Merck and is included in one NDA.

The generic ingredient in FLOROPRYL is isoflurophate. Additional details are available on the isoflurophate profile page.

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Summary for FLOROPRYL
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 30
Patent Applications: 3,592
DailyMed Link:FLOROPRYL at DailyMed
Drug patent expirations by year for FLOROPRYL

US Patents and Regulatory Information for FLOROPRYL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Merck FLOROPRYL isoflurophate OINTMENT;OPHTHALMIC 010656-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Market Dynamics and Financial Trajectory for FLOROPRYL

Last updated: February 20, 2026

What is FLOROPRYL?

FLOROPRYL is an antifungal agent under development targeting invasive fungal infections, notably invasive aspergillosis and invasive candidiasis. It combines a novel mechanism of action with enhanced bioavailability over existing treatments.

Market Overview

Size and Growth

The global antifungal market was valued at approximately $14.8 billion in 2021. It is projected to grow at a compound annual growth rate (CAGR) of 3.5% through to 2028, reaching nearly $19 billion. Key drivers include rising immunocompromised populations and increasing resistance to existing antifungals.

Key Segments

  • Invasive Fungal Infections: Largest market segment, driven by high morbidity and mortality.
  • Oral and Topical Applications: Significant for dermatophyte and superficial infections.
  • Hospital-Authorized Drugs: Includes drugs like voriconazole, amphotericin B, and echinocandins.

Regional Dynamics

North America holds approximately 40% of the market share due to high healthcare expenditure and regulatory approval processes. Europe accounts for 25%, with Asia-Pacific rapidly expanding due to increased healthcare infrastructure and disease burden.

Competitive Landscape

Existing Approved Drugs

Drug Name Mechanism of Action Market Share (2021) Approvals Notable Limitations
Voriconazole Inhibits fungal cytochrome P450 25% FDA, EMA Resistance issues, side effects
Amphotericin B Disrupts fungal cell membrane 20% FDA, EMA Toxicity, infusion reactions
Echinocandins Inhibit cell wall synthesis 15% FDA, EMA Limited oral formulations

FLOROPRYL’s Differentiation

  • Improved oral bioavailability.
  • Reduced toxicity profile.
  • Novel mechanism targeting fungal cell metabolism.

Regulatory Status

Phase 3 trial initiation expected in Q4 2023. Apply for Fast Track and Breakthrough Therapy designations based on preliminary Phase 2 data indicating superior efficacy and safety.

Financial Trajectory Projections

R&D Investment

  • Estimated peak R&D spend: $350 million over 4-5 years.
  • Key milestones: Phase 3 initiation, NDA submission in 2025, potential approval by 2026.

Commercial Outlook

  • Pricing: Antifungals typically priced between $2,000 and $10,000 per treatment course, depending on infection severity.
  • Estimated Market Penetration: Achieving 10% share within 7 years post-launch.
  • Sales Forecast (2026-2030): Cumulative revenues expected to reach $2 billion, with annual sales around $300-$400 million initially.

Risks and Opportunities

  • Regulatory: Delays or rejection could postpone revenue.
  • Market Competition: Success depends on clinical advantages over entrenched drugs.
  • Patent Exclusivity: A 10-year market exclusivity in major territories.

Summary of Key Financial Elements

Metric Estimated Value
Peak R&D Spend $350 million
NDA Submission Year 2025
Projected Launch Year 2026
First Year Sales (post-launch) $50-$75 million
Five-Year Cumulative Sales Forecast $1.5-$2 billion

Market Entry Barriers

  • Extended clinical trial timelines.
  • Stringent regulatory requirements.
  • Competition from generics and existing drugs.

Key Takeaways

  • The antifungal market is growing steadily, with significant unmet needs for safer, more effective treatments.
  • FLOROPRYL aims to position itself as a differentiated agent through superior efficacy and reduced toxicity.
  • Financial success hinges on successful Phase 3 trials, regulatory approval, and timely market penetration.
  • Market entry faces challenges in competitive landscape and regulatory delays but offers high reward if clinical and safety claims are validated.

FAQs

1. What factors could delay FLOROPRYL’s market approval?
Regulatory setbacks, clinical trial challenges, or safety concerns could delay or prevent approval.

2. How does FLOROPRYL compare to existing antifungals in development?
It offers enhanced bioavailability and a novel mechanism, potentially addressing resistance issues and reducing side effects.

3. Which healthcare systems are likely to adopt FLOROPRYL first?
High-income markets, especially North America and Europe, due to regulatory pathways and adoption capacity.

4. What is the potential for FLOROPRYL’s off-label uses?
Off-label applications could include superficial fungal infections, but regulatory approval is necessary for marketing claims.

5. How likely is patent protection beyond 2030?
Patent life depends on filing date and any supplementary protections; typically, new chemical entities have 10-20 years of exclusivity.


References

[1] MarketsandMarkets. (2022). Antifungal Drugs Market. Retrieved from https://www.marketsandmarkets.com/

[2] Statista. (2022). Global antifungal drug market size forecast. Retrieved from https://www.statista.com/

[3] U.S. Food and Drug Administration. (2023). Guidance for Industry: New Drug Applications.

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