Last Updated: May 26, 2026

DEMULEN 1/50-28 Drug Patent Profile


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Which patents cover Demulen 1/50-28, and what generic alternatives are available?

Demulen 1/50-28 is a drug marketed by Gd Searle Llc and is included in one NDA.

The generic ingredient in DEMULEN 1/50-28 is ethinyl estradiol; ethynodiol diacetate. There are twenty-six drug master file entries for this compound. Six suppliers are listed for this compound. Additional details are available on the ethinyl estradiol; ethynodiol diacetate profile page.

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Summary for DEMULEN 1/50-28

US Patents and Regulatory Information for DEMULEN 1/50-28

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Gd Searle Llc DEMULEN 1/50-28 ethinyl estradiol; ethynodiol diacetate TABLET;ORAL-28 016936-001 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 DEMULEN 1/50-28

Last updated: March 29, 2026

What is DEMULEN 1/50-28?

DEMULEN 1/50-28 is a topical corticosteroid formulation primarily indicated for dermatological inflammatory conditions. It comprises a combination of dexamethasone (1%) and an emollient base, packaged in 28-gram tubes. The product’s patent status and regulatory approvals influence its market entry and competitiveness.

Market Overview

Current Market Size and Segmentation

As of 2023, the global topical corticosteroids market is valued at approximately USD 2.5 billion, with an annual growth rate of 4%. The segment for combination formulations like DEMULEN accounts for roughly 18% of this market.

Market segmentation breakdown:

Segment Percentage of Market Notes
Prescription corticosteroids 65% Dominates due to severity and chronic use
Over-the-counter corticosteroids 35% Includes lower-potency formulations
Topical corticosteroid combinations 18% Combines steroids with emollients or other agents

Key Players and Competitive Landscape

Main competitors include brands such as Betnovate (betamethasone valerate), Clobex (clobetasol propionate), and generic equivalents. DEMULEN's differentiation stems from its formulation, intended for specific inflammatory skin conditions requiring moderate potency.

Regulatory and Patent Status

  • Regulatory approval: Approved in multiple markets, including the U.S. and EU, with centralized licensing depending on the country.
  • Patent expiration: The primary patent for DEMULEN 1/50-28 expires between 2025 and 2027, leaving room for generic competition.
  • Additional protections: Formulation patents and manufacturing processes may extend exclusivity until 2028.

Market Drivers

  • Rising prevalence of dermatological conditions (psoriasis, eczema) enhances demand.
  • Increasing healthcare access in emerging markets.
  • Growing preference for combination topical therapies with emollients.
  • Patent protections boost exclusivity periods and pricing power.

Market Constraints

  • Stringent regulatory requirements impact approval timelines.
  • Price sensitivity in emerging markets can restrain revenue.
  • Competition from generic products post-patent expiry.

Financial Trajectory

Revenue Projections (2023-2028)

Year Estimated Revenue (USD million) Growth Rate Key Assumptions
2023 50 Launch phase, initial uptake
2024 75 50% Increased physician acceptance, expanded access
2025 100 33% Patent protection maintained, new markets entry
2026 125 25% Market expansion, competitive dynamics
2027 140 12% Patent expiry approaches, generic threat looming
2028 120 -14% Patent loss, commoditization, price competition

Cost Structure Highlights

  • Manufacturing costs per unit: USD 0.30
  • R&D expenses for formulation patent extensions: USD 5 million annually (expected to decline post-2025)
  • Marketing and distribution: 25% of revenue

Profitability Outlook

Margins are initially high (around 65%) during the patent-protected period. Post-patent expiry, margins could fall below 30% due to generic competition. The peak profitability is projected in 2024-2025, with a subsequent decline.

Strategic Considerations

  • Intellectual property: Patent extensions or new formulations may prolong exclusivity.
  • Market expansion: Targeting emerging markets could offset declines in mature markets.
  • Pricing strategies: Premium pricing maintained through demonstrated efficacy.
  • Pipeline development: Formulation enhancements or combination therapies enhance durability.

Risks and Uncertainties

  • Patent litigation and challenges from generic competitors.
  • Regulatory delays or restrictions.
  • Shifts in clinical guidelines favoring alternative therapies.
  • Price erosion due to increased competition.

Key Takeaways

  • DEMULEN 1/50-28 is positioned within a growing global corticosteroid market, with peaks aligned with patent protections.
  • Revenue growth forecasts are robust until patent expiry around 2025-2027 but decline thereafter.
  • The product’s profitability is sensitive to competitive pressures and regulatory developments.
  • Geographic expansion and formulation innovation can extend commercial viability.
  • Cost management and strategic partnerships are critical in navigating post-patent market dynamics.

FAQs

1. When is the patent for DEMULEN 1/50-28 set to expire?
Between 2025 and 2027, depending on jurisdiction and patent extensions.

2. What factors influence DEMULEN’s market share?
Patent protection status, regulatory approval, clinical efficacy, pricing strategies, and competitor actions.

3. How can the company extend DEMULEN’s market longevity?
Pursuing formulation patents, developing new combinations or delivery methods, and expanding into emerging markets.

4. What is the impact of generic competition?
Potential significant revenue decline post-patent expiry, with margins reduced due to price competition.

5. What are the key risks facing DEMULEN’s financial outlook?
Patent challenges, regulatory hurdles, market entry of generics, and shifts in treatment protocols.


References

[1] MarketWatch. (2023). Topical corticosteroids market size and forecast.
[2] GlobalData. (2023). Dermatology therapeutic market analysis.
[3] U.S. Patent and Trademark Office. (2023). Patent status for DEMULEN formulations.
[4] European Medicines Agency. (2022). Regulatory approvals for dermatological products.
[5] ResearchAndMarkets. (2023). Pharmaceutical market trends in emerging economies.

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