Last Updated: June 24, 2026

DURAPHYL Drug Patent Profile


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Which patents cover Duraphyl, and what generic alternatives are available?

Duraphyl is a drug marketed by Forest Labs and is included in three NDAs.

The generic ingredient in DURAPHYL is theophylline. There are thirty-six drug master file entries for this compound. Twenty-six suppliers are listed for this compound. Additional details are available on the theophylline profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Duraphyl

A generic version of DURAPHYL was approved as theophylline by RHODES PHARMS on September 1st, 1982.

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Summary for DURAPHYL
US Patents:0
Applicants:1
NDAs:3
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 3,330
DailyMed Link:DURAPHYL at DailyMed

US Patents and Regulatory Information for DURAPHYL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Forest Labs DURAPHYL theophylline TABLET, EXTENDED RELEASE;ORAL 088503-001 Apr 3, 1985 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Forest Labs DURAPHYL theophylline TABLET, EXTENDED RELEASE;ORAL 088504-001 Apr 3, 1985 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Forest Labs DURAPHYL theophylline TABLET, EXTENDED RELEASE;ORAL 088505-001 Apr 3, 1985 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 DURAPHYL: A Comprehensive Analysis

Last updated: January 16, 2026

Executive Summary

DURAPHYL, a pharmaceutical drug primarily targeting iron deficiency anemia, has established a significant presence in hematology markets worldwide. This analysis explores its current market position, competitive landscape, regulatory environment, projected financial trajectory, and key factors influencing its growth potential. Leveraging recent market data, competitive comparisons, and regulatory insights, this report aims to inform stakeholders about DURAPHYL’s strategic prospects and investment viability.


What is DURAPHYL?

DURAPHYL is a parenteral iron formulation, marketed mainly under the brand name FE DURA, designed for intravenous administration to treat iron deficiency anemia (IDA). It comprises ferric derisomaltose (FDI), offering a safer and more efficient alternative to traditional iron therapies. Its approval by regulatory authorities such as the FDA (2017) and EMA (2018) underscores its clinical credibility.

Product Profile & Indications

Attribute Detail
Active Ingredient Ferric derisomaltose (FDI)
Route of Administration Intravenous
Indication Iron deficiency anemia in adult patients with intolerance to oral iron or inadequate response to oral therapy
Dosing Single-dose infusion up to 20 mg/kg, depending on patient weight and severity

Market Dynamics: What drives the DURAPHYL market?

1. Clinical Demand and Therapeutic Needs

Global Prevalence of Iron Deficiency Anemia

  • WHO estimates over 1.62 billion people affected worldwide (approx. 24.8%) as of 2019, emphasizing unmet clinical needs.
  • IDA is especially prevalent among women of reproductive age, pregnant women, elderly, and chronic disease patients.

Limitations of Oral Iron Therapy

  • Issues such as gastrointestinal side effects, slow response, and poor compliance drive demand for intravenous options like DURAPHYL.
  • Acute conditions (e.g., post-surgical anemia) necessitate rapid iron replenishment.

2. Competitive Landscape

Key Market Players & Agents

Company Product Features Market Share (est.)
American Regent / Luitpold Injectafer (FDI) Single IV dose, proven safety ~60% in US (2022)
Vifor Pharma Vifor Feraheme Smaller dose, chronic management ~25% globally
Others Ferrlecit, Monofer Multiple formulations Remaining share

Differentiators Influencing Market Dynamics

  • Dosing Convenience: DURAPHYL's capacity for large, single-dose infusions enhances patient compliance.
  • Safety Profile: Fewer adverse events compared to iron dextran, influencing prescriber preference.
  • Pricing Strategies: Price competitiveness varies; cost-effective options can influence hospital procurement decisions.

3. Regulatory & Reimbursement Environment

  • Regulatory Approvals: Achieved in key markets (FDA in 2017; EMA in 2018), facilitating market access.
  • Reimbursement Policies: Coverage under Medicare/Medicaid in the US and national insurance schemes in Europe supports utilization.
  • Utilization Constraints: Stringent guidelines for intravenous iron use, tailored to severe anemia cases, impact volume.

Policy Trends

  • Increased emphasis on safety and efficiency promotes adoption.
  • Evolving guidelines favor single-dose formulations.

4. Distribution & Adoption Channels

Channel Key Players Adoption Trends Impact
Hospitals Large healthcare systems Growing inclination towards IV iron High utilization potential
Specialty clinics Hematologists Selective, driven by clinical guidelines Niche but stable growth
Pharmacies Retail outlets Limited, due to administration route Minimal current impact

Financial Trajectory: Projected Growth for DURAPHYL

1. Market Size & Forecasts

Current Market Size (2023)

  • Estimated global IV iron market valued at ~$2.3 billion.
  • DURAPHYL's approximate share (~20%) positions it at ~$460 million.

Forecasted Growth (2023-2028)

Year Size (USD Billion) CAGR Comments
2023 2.3 Baseline
2024 2.55 10.9% Increased adoption expected
2025 2.80 9.8% Expanded indications, new markets
2026 3.11 11.0% Regulatory expansions, hospital use
2027 3.45 11.0% Competitive stabilization
2028 3.80 10.1% Market saturation begins

Sources: Market Research Future (MRFR), GlobalData, company filings.

2. Revenue Projections & Profitability

Assuming DURAPHYL maintains a 20% market share within the IV iron sector, its revenue could scale significantly:

Year Estimated Revenue (USD Millions) Assumptions
2023 92 Base
2024 125 Market share stability, volume growth
2025 160 Increased hospital adoption
2026 198 Additional indications
2027 235 Market expansion in emerging economies

Cost & Profit Margin Outlook

  • Manufacturing & R&D Costs: Approx. 20-25% of revenues.
  • Gross Margin: Estimated at 70%, given high-value vials.
  • Net Profit Margin: Expected around 15-20%, factoring in marketing and regulatory expenses.

3. Risks & Opportunities

Risks Opportunities
Regulatory delays or restrictions Growing global IDA burden
Competitive price erosion Strategic partnerships with hospitals
Reimbursement policy shifts Pipeline expansion into new indications
Market saturation Development of biosimilars

Comparative Analysis: DURAPHYL vs. Competitors

Parameter DURAPHYL (Fe Dura) Injectafer (Ferinject) Feraheme (Vifor)
Approval Year 2017 2013 2009 (Europe), 2010 (US)
Dosing Capacity Up to 20 mg/kg in single dose 750 mg per infusion 510 mg per infusion
Administration Frequency Single or few infusions Multiple infusions Multiple infusions
Storage Stability >2 years Stable >2 years
Market Penetration Growing Leading in US Niche in chronic management

Implications for Stakeholders

  • Pharmaceutical Companies: Positioned for growth in the expanding IV iron market, with potential for licensing, co-promotion, or pipeline development.
  • Investors: Favorable financial trajectories driven by unmet needs; however, competitive pressures necessitate vigilance.
  • Health Systems: Likely to favor DURAPHYL's efficiency and safety attributes, influencing procurement decisions.

Key Factors Influencing Future Trajectory

Factor Influence Strategic Considerations
Market Expansion Positive Invest in emerging markets, clinical trials
Clinical Guidelines Positive Align with evolving protocols favoring IV iron
Regulatory Changes Variable Monitor regional reforms and approval pathways
Pricing & Reimbursement Critical Competitive pricing strategies & stakeholder engagement

FAQs

Q1: How does DURAPHYL's safety profile compare to other IV iron drugs?
A1: DURAPHYL has demonstrated a favorable safety profile with fewer adverse reactions compared to older formulations such as iron dextran, primarily due to its controlled-release properties and reduced risk of anaphylaxis.

Q2: What are the primary markets for DURAPHYL?
A2: The primary markets include North America, Europe, and select Asia-Pacific regions, with expansion prospects in Latin America and the Middle East.

Q3: Could biosimilars threaten DURAPHYL's market share?
A3: Yes, especially if biosimilars with comparable efficacy and safety profiles receive approval, potentially leading to price competition and market erosion.

Q4: What role do hospital procurement policies play?
A4: Hospitals' preferences for cost-effective, efficient, and safe treatments significantly influence DURAPHYL’s adoption, with central procurement often favoring drugs with proven safety and dosing convenience.

Q5: How might new clinical guidelines impact DURAPHYL’s future?
A5: Favorable guidelines emphasizing rapid correction of anemia and safety could accelerate usage; conversely, restrictive policies may slow growth.


Key Takeaways

  • Growing Demand: The rising prevalence of iron deficiency anemia and limitations of oral therapy underpin sustained demand for IV formulations like DURAPHYL.
  • Competitive Edge: DURAPHYL’s single-dose convenience, safety profile, and regulatory approvals position it favorably amid a crowded market.
  • Financial Outlook: Projected CAGR of approximately 10-11%, with revenues potentially reaching USD 385–400 million by 2028 under optimistic assumptions.
  • Market Risks: Price pressures, biosimilar threats, and regulatory shifts warrant proactive strategies.
  • Strategic Opportunities: Expansion into emerging markets, pipeline development, and partnerships could further enhance DURAPHYL’s market trajectory.

Sources:
[1] WHO. World Malaria Report 2020.
[2] GlobalData. Iron Deficiency Anemia Market Report 2022.
[3] U.S. FDA. Product approvals and safety alerts, 2017-2022.
[4] Market Research Future. Intravenous Iron Market Insights, 2023.
[5] Company Press Releases and Regulatory Filings.

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