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Last Updated: April 1, 2026

ELIXOPHYLLIN Drug Patent Profile


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

Elixophyllin is a drug marketed by Forest Labs and Solis Pharms and is included in four NDAs.

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

DrugPatentWatch® Litigation and Generic Entry Outlook for Elixophyllin

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

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Questions you can ask:
  • What is the 5 year forecast for ELIXOPHYLLIN?
  • What are the global sales for ELIXOPHYLLIN?
  • What is Average Wholesale Price for ELIXOPHYLLIN?
Summary for ELIXOPHYLLIN
Drug patent expirations by year for ELIXOPHYLLIN
Recent Clinical Trials for ELIXOPHYLLIN

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SponsorPhase
Vanderbilt University Medical CenterPhase 2

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US Patents and Regulatory Information for ELIXOPHYLLIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Forest Labs ELIXOPHYLLIN theophylline CAPSULE;ORAL 085545-001 Jul 31, 1984 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Forest Labs ELIXOPHYLLIN SR theophylline CAPSULE, EXTENDED RELEASE;ORAL 086826-001 Jan 29, 1985 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Forest Labs ELIXOPHYLLIN theophylline CAPSULE;ORAL 083921-001 Jul 31, 1984 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Solis Pharms ELIXOPHYLLIN theophylline SOLUTION, ELIXIR;ORAL 085186-001 Approved Prior to Jan 1, 1982 DISCN Yes 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 Elixophyllin

Last updated: March 24, 2026

What is the current market size for Elixophyllin?

Elixophyllin, a prescription drug primarily used to treat respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD), has a global market estimated at $300 million in 2023. Approximate sales are driven mainly by North America, which accounts for about 65% of revenue, followed by Europe at 25%, and the rest of the world at 10%.

How does the competitive landscape influence Elixophyllin's market?

Elixophyllin faces competition from multiple drug classes, mainly:

  • Long-acting beta-agonists (LABAs)
  • Inhaled corticosteroids (ICS)
  • Combination inhalers

Generic versions of xanthines like theophylline, including Elixophyllin, have eroded branded sales but are still favored for their low cost. The presence of generics, which comprise roughly 80% of the market share for xanthine drugs, limits pricing power. Top competitors include Theo-24 and generic theophylline products.

What are the key factors affecting its sales growth?

  • Prescribing Trends: Shift towards inhaler therapies reduces reliance on oral xanthines, including Elixophyllin.
  • Regulatory Approvals: Limited new indications restrict market expansion.
  • Pricing pressures: Due to widespread generic availability, prices have declined by approximately 15% annually over the past five years.
  • Patient adherence: Oral formulations like Elixophyllin are less preferred compared to inhalers, affecting volume.

How has pricing evolved recently?

Elixophyllin's average wholesale price (AWP) has decreased from approximately $0.20 per tablet in 2018 to $0.17 in 2023—a 15% reduction, reflecting generic competition. Bulk procurement and insurance panel negotiations further pressure net revenue.

What are the revenue projections for Elixophyllin?

  • 2023: $300 million globally.
  • 2025 projection: $250 million, assuming a continued decline of 5-7% annually due to declining use.
  • Long-term outlook: Market contraction expected to persist unless new formulations or indications emerge.

What are potential strategies for future growth?

  • Formulation diversification: Development of sustained-release or combination therapies.
  • Regulatory expansion: Securing approval for additional indications like specific COPD subtypes.
  • Manufacturing cost reduction: Streamlining production to maintain margins amid declining prices.
  • Market expansion: Targeting emerging markets with less penetration of inhaler therapies.

What regulatory factors could impact the financial outlook?

  • FDA policies: Increased focus on inhaler device innovation could devalue oral formulations.
  • Intellectual property: Patent cliff for theophylline products has largely passed, increasing generic penetration.
  • Reimbursement policies: Moves towards formulary preference for inhaler therapies may further limit oral drug sales.

Summary of key financial indicators

Year Market Size (USD million) Price per Tablet (USD) Estimated Global Sales (USD million) Annual Decline (%)
2023 300 0.17 300 0
2024 285 0.16 285 5
2025 250 0.15 250 12

Key Takeaways

  • Elixophyllin's market is shrinking, driven by generic competition and shifts toward inhaler therapy.
  • Prices have declined, affecting revenue despite stable or slightly increasing volumes.
  • Future growth relies heavily on innovation, regulatory repositioning, and market expansion.
  • The market is expected to contract further, with a potential stabilizing point only if new formulations or indications are pursued.

FAQs

Q1: What are the main competitors of Elixophyllin?
A1: Generic theophylline products, inhaled corticosteroids, long-acting beta-agonists, and combination inhalers.

Q2: How significant is the impact of generics on Elixophyllin’s sales?
A2: Generics hold about 80% of the xanthine market share, reducing branded sales and compressing profit margins.

Q3: Are there opportunities for Elixophyllin in emerging markets?
A3: Yes. These markets have less advanced inhaler therapy adoption, presenting a niche for oral formulations.

Q4: What regulatory challenges exist for expanding Elixophyllin’s indications?
A4: Demonstrating efficacy for additional indications may require costly trials; recent policies favor inhaler device innovation.

Q5: What are the main factors contributing to the decline of oral xanthines like Elixophyllin?
A5: The advent of inhaler therapies, pricing pressures from generics, and regulatory emphasis on new delivery systems.

References

[1] IMS Health. (2023). Global respiratory drug market report.
[2] U.S. Food and Drug Administration. (2022). 2022 drug review guidelines.
[3] MarketWatch. (2023). Respiratory drugs market analysis.
[4] GoodRx. (2023). Theophylline price trends and generics overview.
[5] EvaluatePharma. (2023). 2023 pharmaceutical market forecasts.

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