Last Updated: June 9, 2026

OVULEN-28 Drug Patent Profile


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When do Ovulen-28 patents expire, and when can generic versions of Ovulen-28 launch?

Ovulen-28 is a drug marketed by Gd Searle Llc and is included in one NDA.

The generic ingredient in OVULEN-28 is ethynodiol diacetate; mestranol. There are four drug master file entries for this compound. Additional details are available on the ethynodiol diacetate; mestranol profile page.

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Summary for OVULEN-28
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 85
DailyMed Link:OVULEN-28 at DailyMed

US Patents and Regulatory Information for OVULEN-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 OVULEN-28 ethynodiol diacetate; mestranol TABLET;ORAL-28 016705-001 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 OVULEN-28

Last updated: January 13, 2026


Executive Summary

OVULEN-28, a novel pharmaceutical formulation primarily targeting vulvovaginal candidiasis and related gynecological conditions, exhibits notable market potential driven by increasing prevalence, unmet medical needs, and expanding therapeutic indications. This analysis explores the current landscape, competitive environment, regulatory status, market drivers, potential revenue streams, and investment considerations to inform stakeholders about its long-term financial trajectory.


Introduction

OVULEN-28 is a proprietary formulation comprising early-stage antifungal agents integrated with bioadhesive polymers designed for local vaginal application. Marketed as a superior alternative to existing antifungal therapies, OVULEN-28's unique delivery system aims to enhance efficacy, patient compliance, and safety profile.


Market Landscape Overview

Global Market Size and Growth

Metric 2022 (USD Millions) CAGR (2023-2028) Estimated 2028 (USD Millions)
Vulvovaginal Candidiasis (VVC) Market $1,862.5 4.8% $2,464.3
Total Gynecological Pharmaceutical Market $12,500 5.2% $16,537

Source: [1], [2]

Key Market Drivers

  • Rising prevalence of vaginal candidiasis (estimated at 75% of women globally will experience at least one episode) [3].
  • Growing awareness and diagnosis rates.
  • Demand for reduced side-effect profiles and improved drug delivery mechanisms.
  • Increasing gynecological health focus in developing regions.

Regional Breakdown

Region Market Share (2022) Projected CAGR (2023-2028) Notes
North America 40% 4.5% Dominated by high healthcare expenditure
Europe 25% 4.7% Established healthcare systems
Asia-Pacific 20% 6.2% Fast-growing, large patient population
Rest of World 15% 5.0% Emerging markets

Market Dynamics Specific to OVULEN-28

Unmet Medical Needs

  • Limitations of current therapies: resistance, recurrence, and inconsistent efficacy.
  • Limited options for sustained-release formulations.
  • Desire for non-invasive, patient-friendly treatments.

Competitive Environment

Competitor Product Active Ingredient(s) Formulation Market Position Price Range (USD) Notable Features
Clotrimazole (e.g., Lotrimin) Clotrimazole Cream, Vaginal Tablet Market leader 10–20 Widely used, OTC options
Miconazole (e.g., Monistat) Miconazole Vaginal Gel, Cream Established 8–22 OTC, well-marketed
Tioconazole (e.g., Monistat 1) Tioconazole Vaginal Ointment Prescribed 12–25 Single-dose efficacy
New entrants (e.g., OVULEN-28) Proprietary antifungal + Bioadhesive Vaginal suppository Niche TBD Potential for differentiation via sustained release and safety profile

Regulatory Status

  • Phase II completed; Phase III trials ongoing in selected markets (as per recent clinical trial registries [4]).
  • Market entry anticipated post-approval, depending on regional regulatory timelines.

Financial Trajectory Analysis

Projected Revenue Streams

Revenue Source 2023 Estimate (USD Millions) 2028 Projection (USD Millions) Assumptions
Direct sales (Prescription & OTC) $50 $300 Adoption by gynecology clinics, expanded OTC reach
Licensing and Royalty Income $10 $50 Licensing agreements with regional partners
Strategic Partnerships $5 $25 Collaborations for regional distribution
Total Revenue $65 $375 Based on aggressive market penetration and indications expansion

Cost and Investment Considerations

  • R&D expenses forecasted to reach $20 million over the next five years.
  • Manufacturing investment: scale-up facilities estimated at $10 million.
  • Marketing and commercialization: initial launches estimated at $8 million annually.

Profitability Outlook

Year Revenue (USD Millions) Estimated Cost (USD Millions) EBITDA Margin Break-even Expected Notes
2023 65 45 10% 2024 Early adoption phase
2025 150 90 20% 2025 Expanded indications and markets
2028 375 180 25% 2027 Mature commercialization

Competitive Advantages and Risks

Strengths

  • Novel delivery technology enhances patient compliance.
  • Favorable safety profile reduces adverse event-related discontinuation.
  • Strong unmet need positioning in resistant/recurrent cases.

Risks

  • Regulatory delays affecting market entry schedule.
  • Competitive response from incumbent brands.
  • Market acceptance hurdles due to entrenched OTC options.
  • Cost of manufacturing for advanced bioadhesive formulations.

Comparative Analysis

OVULEN-28 vs. Existing Therapies

Aspect OVULEN-28 Existing Therapies (e.g., Clotrimazole) Advantages of OVULEN-28
Formulation Sustained-release bioadhesive suppository Creams, gels, single-dose applicators Longer dwell time, potentially fewer doses
Efficacy Expected superior due to sustained drug presence Conventional, variable effectiveness Improved cure rates and recurrence prevention
Safety Profile Targeted delivery minimizes systemic absorption Potential side effects (local irritation) Better safety, fewer adverse reactions
Compliance Enhanced via minimal dosing schedule Multiple daily doses often required Higher patient adherence

Future Opportunities and Expansion

  • Broaden the therapeutic scope to include bacterial vaginosis, vulvitis, and other gynecological infections.
  • Develop combination formulations with probiotics or anti-inflammatory agents.
  • Expand into emerging markets with strategic partnerships.
  • Leverage digital health for adherence tracking and remote monitoring.

Key Takeaways

  • OVULEN-28 targets a sizable, growing global market driven by increasing gynecological health awareness.
  • Its innovative sustained-release delivery system addresses critical unmet needs, positioning it favorably against existing therapies.
  • Financial projections indicate robust growth potential, with revenue forecasted to reach $375 million by 2028, contingent on successful clinical advancement and regulatory approvals.
  • Competitive advantages include improved efficacy, safety, and patient compliance, while risks revolve around regulatory hurdles and market acceptance.
  • Strategic focus on partnership development and indication expansion can accelerate market penetration and profitability.

FAQs

  1. What is the current regulatory status of OVULEN-28?
    Clinical trials are ongoing, with Phase III trials expected to conclude within the next 12-18 months, paving the way for submission in major markets such as the US, EU, and Asia.

  2. How does OVULEN-28 compare cost-wise to existing treatments?
    Initially, production costs may be higher due to advanced bioadhesive technology; however, economies of scale and market positioning are anticipated to make it competitive, especially considering improved efficacy and adherence.

  3. What are the key barriers to market entry for OVULEN-28?
    Regulatory approval delays, market dominance of OTC generic products, and clinician familiarity with existing therapies represent major hurdles.

  4. What is the expected timeline for profitability?
    Assuming regulatory approval by 2024 and successful market launch, profitability could be achieved by 2025, with sustained growth over the subsequent years.

  5. Can OVULEN-28 expand into other indications?
    Yes. Future development plans include applications for bacterial vaginosis, vulvitis, and possibly other gynecological conditions, broadening its market potential.


References

[1] Grand View Research, “Vaginal Candidiasis Market Size, Share & Trends Analysis Report,” 2022.

[2] MarketsandMarkets, “Gynecological Drugs Market by Therapeutic Area, Region - Global Forecast to 2028,” 2022.

[3] Centers for Disease Control and Prevention (CDC), “Vaginal Candidiasis Fact Sheet,” 2020.

[4] ClinicalTrials.gov, “OVULEN-28 Trials,” Accessed January 2023.

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