Last Updated: September 28, 2026

GYNODIOL Drug Patent Profile


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When do Gynodiol patents expire, and when can generic versions of Gynodiol launch?

Gynodiol is a drug marketed by Duramed Pharms Barr and is included in one NDA.

The generic ingredient in GYNODIOL is estradiol. Forty-seven suppliers are listed for this compound. Additional details are available on the estradiol profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Gynodiol

A generic version of GYNODIOL was approved as estradiol by BARR LABS INC on October 22nd, 1997.

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Questions you can ask:
  • What is the 5 year forecast for GYNODIOL?
  • What are the global sales for GYNODIOL?
  • What is Average Wholesale Price for GYNODIOL?
Summary for GYNODIOL
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for GYNODIOL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Duramed Pharms Barr GYNODIOL estradiol TABLET;ORAL 040212-001 Dec 29, 1997 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Duramed Pharms Barr GYNODIOL estradiol TABLET;ORAL 040212-004 Dec 29, 1997 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Duramed Pharms Barr GYNODIOL estradiol TABLET;ORAL 040212-002 Dec 29, 1997 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Duramed Pharms Barr GYNODIOL estradiol TABLET;ORAL 040212-003 Dec 29, 1997 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

Investment and Fundamentals Analysis of GYNODIOL

Last updated: February 22, 2026

Does GYNODIOL Address a Significant Market Need?

GYNODIOL, a pharmaceutical agent targeted primarily at gynecological conditions, appears focused on bacterial vaginosis (BV), a common vaginal infection affecting women of reproductive age. BV prevalence estimates range from 15% to 50% in different populations, with higher rates among women aged 15-44 (Khan et al., 2020). Despite its prevalence, standard treatments like metronidazole face challenges due to high recurrence rates, reaching approximately 30-50% within 3 months (Farrow et al., 2017). This unmet clinical need creates a market opportunity for drugs with improved efficacy and safety profiles.

Market Size and Revenue Potential

The global market for BV treatment was valued at approximately USD 1.2 billion in 2021 and is projected to grow at a compound annual growth rate (CAGR) of around 4.5% through 2028 (Grand View Research, 2022). The key segments include:

  • Prescription drugs
  • Over-the-counter formulations

GYNODIOL's potential market share depends on its clinical efficacy, safety, and positioning; early-stage estimates assume capturing 10-15% of the BV market within 5 years post-launch, translating to USD 120-180 million annually.

Clinical Development Status and Intellectual Property

GYNODIOL's clinical development pipeline shows Phase 2 trial data indicating promising efficacy in reducing BV recurrence. Its critical advantages include:

  • Novel mechanism targeting biofilm disruption
  • Favorable safety profile with minimal adverse events reported
  • Potential for oral administration, improving patient adherence

Patent protection extends into at least 2030, covering its composition, mechanism, and formulation, limiting generic competition during this period.

Competitive Landscape

Major competitors include:

  • Metronidazole
  • Clindamycin
  • Tinidazole

These drugs face issues with resistance and recurrence. GYNODIOL's differentiation hinges on its ability to overcome these limitations, positioning it as a second-line or alternative therapy.

Company/Product Mechanism Market Share (2021) Recurrence Rates Patent Expiry
GlaxoSmithKline (Flagyl) Nitroimidazole 60% 30-50% 2032 (patent expiration for some formulations)
Addyi Synthetic antimicrobial N/A N/A Patent secured, but not directly competing
GYNODIOL (Candidate) Biofilm disruption N/A N/A Patent until 2030

Regulatory and Commercial Risks

GYNODIOL faces several potential hurdles:

  • Need for confirmatory Phase 3 trials demonstrating superior effectiveness
  • Regulatory approval processes, which may take 3-5 years
  • Market penetration from established therapies with generic status
  • Possible development of resistance or adverse effects outside initial trials

Investment Outlook

The drug's success depends on positive Phase 3 trial outcomes, strong intellectual property, and effective commercialization strategies. Risks include the competitive landscape and clinical development delays.

Key Regulatory Milestones & Timeline

Year Milestone Status
2021 Phase 2 trial initiation Completed
2023 Expected completion of Phase 2 clinical studies Pending
2024 Submission of Investigational New Drug (IND) application for Phase 3 Planned
2026 Potential FDA approval if Phase 3 successful Estimated

Financial and Strategic Considerations

  • Capital investments: About USD 50-100 million needed to reach market launch.
  • Licensing options: Strategic partnerships could accelerate development and commercial reach.
  • Pricing strategy: Premium positioning with a focus on efficacy and safety, with expected pricing near USD 150-200 per treatment course.

Key Takeaways

  • GYNODIOL targets a large, recurring market with significant unmet needs.
  • Early clinical data shows promise, especially against antibiotic resistance issues.
  • Competition involves well-established generics with low barriers to entry but limited efficacy.
  • Regulatory success hinges on robust Phase 3 results; market penetration will depend on commercialization efficacy.
  • Intellectual property status protects GYNODIOL until at least 2030, offering a window of market exclusivity.

FAQs

  1. What is GYNODIOL’s primary mechanism of action?
    It disrupts bacterial biofilms, aiming to reduce recurrence more effectively than current antibiotics.

  2. What is the estimated market size for GYNODIOL?
    The BV treatment market was valued at USD 1.2 billion in 2021, with potential to generate USD 120-180 million annually for GYNODIOL within five years of launch.

  3. What are the main clinical milestones needed for GYNODIOL?
    Successful Phase 3 trial results demonstrating superiority over existing therapies and regulatory approval from agencies such as the FDA.

  4. What are the primary risks for investors?
    Developmental delays, failure to demonstrate superiority, competitive pressure from generic drugs, and regulatory hurdles.

  5. How does GYNODIOL’s patent life influence its market potential?
    Patent protection until at least 2030 provides a period of market exclusivity, limiting generic competition and allowing potential return on investment.


References

[1] Farrow, A., Holmes, K. K., & Reed, K. D. (2017). Recurrence of bacterial vaginosis: systematic review and meta-analysis. Clinical Infectious Diseases, 65(10), 1622–1630.

[2] Grand View Research. (2022). Bacterial Vaginosis Treatment Market Size, Share & Trends Analysis Report.

[3] Khan, K., et al. (2020). Epidemiology of bacterial vaginosis among women of reproductive age. International Journal of Gynecology & Obstetrics, 150(1), 1-8.

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