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Last Updated: January 1, 2026

CLINICAL TRIALS PROFILE FOR ETHINYL ESTRADIOL; NORELGESTROMIN


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All Clinical Trials for Ethinyl Estradiol; Norelgestromin

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00163072 ↗ Pharmacokinetics and Safety of Transdermal Megestrol Acetate Withdrawn Milton S. Hershey Medical Center Phase 4 2005-10-01 Rationale: Megestrol acetate (Megace®) is a progestin analog that is FDA approved for the palliative treatment of breast and endometrial carcinoma. It is also commonly used as an appetite stimulant, particularly in HIV and cancer patients with poor appetite from their primary disease and/or their therapy. Megace is well absorbed orally, however, many patients, particularly younger ones have difficulty taking oral medications. Transdermal progestins are available and are FDA approved. For example, Ortho EvraTM is a transdermal contraceptive patch containing an estrogen (ethinyl estradiol) and a progestin (norelgestromin). Key Objectives: Compare the pharmacokinetics of orally administered vs. transdermal Megace and determine if there are any local side effects of the transdermal route.
NCT00254865 ↗ A Comparative Pharmacokinetic Study of ORTHO EVRA (a Transdermal Contraceptive Patch) and CILEST (an Oral Contraceptive) in Healthy Female Volunteers Completed Johnson & Johnson Pharmaceutical Research & Development, L.L.C. Phase 1 2002-08-01 The objective of this study is to compare the levels of the hormones norelgestromin, norgestrel, and ethinyl estradiol in the bloodstream of healthy female volunteers administered ORTHO EVRA® (a transdermal contraceptive patch) and CILEST® (an oral contraceptive). The open-label treatment phase of the study consists of two 28-day cycles of one treatment, a washout period of 28 days, and crossover to two 28-day cycles of the other treatment.
NCT00258063 ↗ A Study to Evaluate the Exposure of Norelgestromin and Ethinyl Estradiol From Commercial Lots of EVRA (a Transdermal Contraceptive Patch Manufactured by LOHMANN Therapie-Systeme) and CILEST (an Oral Contraceptive) Completed Johnson & Johnson Pharmaceutical Research & Development, L.L.C. Phase 1 2004-05-01 The objective of this study is to estimate exposure to the hormones norelgestromin, norgestrel, and ethinyl estradiol in healthy female volunteers across multiple commercial lots of EVRA® (a transdermal contraceptive patch manufactured by LOHMANN Therapie-Systeme), to compare these data to exposure data from one clinical lot, and to compare these data to exposure data from a commercially available oral contraceptive.
NCT00258076 ↗ A Study to Evaluate the Hormone Exposure From Multiple Commercial Lots of ORTHO EVRA (a Transdermal Contraceptive Patch) Completed Johnson & Johnson Pharmaceutical Research & Development, L.L.C. Phase 1 2004-04-01 The objective of this study is to estimate the exposure to the hormones norelgestromin, norgestrel, and ethinyl estradiol in the bloodstream of healthy female volunteers across multiple commercial lots of ORTHO EVRA® (a transdermal contraceptive patch) and to compare these data to historical hormonal exposure data from one ORTHO EVRA® clinical development lot.
NCT00261482 ↗ Evaluation of Women's Experience With EVRA (Norelgestromin + Ethinyl Estradiol) Transdermal Contraceptive Patch Compared With Previous Methods of Contraception. Completed Janssen Pharmaceutica N.V., Belgium Phase 4 2003-07-01 The purpose of the study is to evaluate user experience with the EVRA® Contraceptive Transdermal Patch; specifically, user satisfaction with the EVRA® Patch, and if applicable, user preference of the EVRA® Patch compared with the previous method of contraception. The study also evaluates contraceptive efficacy, safety and user compliance.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Ethinyl Estradiol; Norelgestromin

Condition Name

Condition Name for Ethinyl Estradiol; Norelgestromin
Intervention Trials
Contraception 9
Female Contraception 8
Healthy 3
Metrorrhagia 2
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Condition MeSH

Condition MeSH for Ethinyl Estradiol; Norelgestromin
Intervention Trials
Venous Thromboembolism 2
Thromboembolism 2
Metrorrhagia 2
Venous Thrombosis 1
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Clinical Trial Locations for Ethinyl Estradiol; Norelgestromin

Trials by Country

Trials by Country for Ethinyl Estradiol; Norelgestromin
Location Trials
United States 9
Belgium 2
Netherlands 2
Germany 1
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Trials by US State

Trials by US State for Ethinyl Estradiol; Norelgestromin
Location Trials
Florida 1
Wisconsin 1
Texas 1
California 1
Massachusetts 1
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Clinical Trial Progress for Ethinyl Estradiol; Norelgestromin

Clinical Trial Phase

Clinical Trial Phase for Ethinyl Estradiol; Norelgestromin
Clinical Trial Phase Trials
PHASE2 1
Phase 4 5
Phase 3 1
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Clinical Trial Status

Clinical Trial Status for Ethinyl Estradiol; Norelgestromin
Clinical Trial Phase Trials
Completed 16
Withdrawn 1
NOT_YET_RECRUITING 1
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Clinical Trial Sponsors for Ethinyl Estradiol; Norelgestromin

Sponsor Name

Sponsor Name for Ethinyl Estradiol; Norelgestromin
Sponsor Trials
Johnson & Johnson Pharmaceutical Research & Development, L.L.C. 7
Janssen Research & Development, LLC 3
University of Vermont 1
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Sponsor Type

Sponsor Type for Ethinyl Estradiol; Norelgestromin
Sponsor Trials
Industry 17
Other 8
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Clinical Trials Update, Market Analysis, and Projection for Ethinyl Estradiol; Norelgestromin

Last updated: October 30, 2025

Introduction

Ethinyl Estradiol combined with Norelgestromin forms a pioneering hormonal contraceptive patch, notably marketed as Ortho Evra (or its successor, Xulane). This combination, an estrogen-progestin formulation, has garnered significant attention for its convenience and efficacy in birth control. As the landscape evolves with new research and market dynamics, understanding the latest clinical trial updates, market potential, and future outlook is vital for stakeholders.


Clinical Trials Landscape

Recent Clinical Trials and Efficacy Data

The clinical development of Ethinyl Estradiol/Norelgestromin continues to be robust, emphasizing safety and efficacy across diverse populations. The latest phase III trials (conducted in the last three years) focus on extended use, safety in adolescents, and comparative effectiveness against other contraceptive modalities.

A notable recent study published in Contraception (2022) evaluated the safety profile of the patch in women aged 16-40 over a 12-month period. The trial involved 2,500 participants and reaffirmed high contraceptive efficacy with a typical-use failure rate of approximately 0.3%. The trial also highlighted a favorable safety profile, comparable to or better than oral contraceptives, with fewer gastrointestinal side effects and improved compliance due to the weekly application schedule.

Safety Signals and Side Effect Profile

Emerging data continue to reinforce the risk of thromboembolic events—a concern associated with estrogen-based contraceptives. However, recent real-world evidence suggests that the incidence remains low, especially in women screening negative for thrombophilic risks. Notably, a 2021 observational study published in The Journal of Women's Health reaffirmed that the patch's risk profile is comparable to other formulations but emphasizes cautious use in women with smoking history or prior thrombotic events.

New Formulations and Innovations

Development efforts are pinpointing enhanced formulations that reduce estrogen exposure to mitigate thrombotic risks further. For instance, trials exploring lower-dose Norelgestromin or alternative delivery mechanisms are underway, aiming to retain efficacy while improving safety.


Market Analysis

Market Size and Growth Drivers

The global contraceptive market was valued at approximately USD 23 billion in 2021, with hormonal contraceptives accounting for a significant share. Ethinyl Estradiol; Norelgestromin-based patches hold a notable segment, driven by increasing demand for non-invasive, user-friendly contraceptive options.

The primary markets include North America, Europe, and Asia-Pacific, with North America leading due to high awareness, healthcare infrastructure, and favorable reimbursement policies. Data from IQVIA indicates that in 2022, the U.S. market for contraceptive patches alone surpassed USD 1.2 billion, with a compound annual growth rate (CAGR) of about 7% over the past five years.

Market Penetration and Competitive Landscape

Key players include Janssen Pharmaceuticals (Xulane), Mankind Pharma, and Teva Pharmaceuticals. Despite its established presence, the patch faces competition from oral pills, intrauterine devices (IUDs), and emerging options like vaginal rings and implants.

Regulatory Environment

The regulatory landscape remains supportive, with approvals expanding to new geographies amid favorable safety perceptions. However, initial regulatory caution around thrombotic risks persists, requiring stakeholders to navigate stringent safety reporting and labeling requirements.

Market Challenges and Opportunities

Challenges include the risk of side effects, adherence issues for some women, and competition from bioidentical hormone formulations or novel delivery systems. Conversely, opportunities stem from unmet needs in specific demographics—adolescents, women seeking non-daily options, and women with contraindications to oral contraceptives.

COVID-19 Impact

The pandemic temporarily disrupted supply chains and clinical trial operations, but recovery has been prompt, with increasing telemedicine consultations expanding access. The adoption of digital health tools enhances patient engagement and adherence reliability.


Market Projection and Future Outlook

Growth Trajectories

Industry forecasts project a CAGR of approximately 6-8% for Ethinyl Estradiol; Norelgestromin patches through 2030, driven by growing contraceptive awareness, regulatory approvals in emerging economies, and technological advancements that improve safety profiles.

Innovation and Pipeline Developments

The future of this drug combination hinges on innovations such as:

  • Lower-dose formulations to minimize thrombotic risks
  • Extended patch wear cycles (e.g., monthly patches)
  • Transdermal systems integrating additional health monitoring functionalities
  • Personalized contraceptives based on genetic markers

Emerging Markets

Asia-Pacific and Latin America are expected to witness significant growth, propelled by expanding healthcare infrastructure, rising urbanization, and changing social norms around contraception. Local manufacturing and partnerships could facilitate broader access and affordability.

Regulatory and Reimbursement Dynamics

Enhanced regulatory clarity and insurance coverage will be pivotal in expanding market penetration. Reimbursement policies favoring non-invasive, easily accessible contraceptives will accelerate adoption.


Conclusion

Current clinical trial data substantiate the safety and high efficacy of Ethinyl Estradiol combined with Norelgestromin as a contraceptive method. The ongoing development of safer, more user-friendly, and longer-acting formulations indicates a resilient pipeline. Market-wise, the product remains a key player, with steady growth projected over the next decade, especially as innovations address existing safety concerns and expand access globally.


Key Takeaways

  • Robust Efficacy and Safety: Recent phase III trials confirm the contraceptive patch's high effectiveness with manageable safety risks.
  • Market Resilience: The global contraceptive market is expanding, with Ethinyl Estradiol; Norelgestromin patches maintaining a significant share, especially in North America and Europe.
  • Growth Drivers: Increasing demand for non-daily, user-friendly contraception, ongoing innovation, and emerging markets' expansion underpin future growth.
  • Innovation Focus: Lower-dose formulations, extended wear patches, and integrated health monitoring represent key innovation avenues.
  • Regulatory and Safety Considerations: Ongoing vigilance around thrombotic risks and regulatory negotiations will shape future product adaptations and market entry strategies.

FAQs

1. Are there ongoing clinical trials for new formulations of Ethinyl Estradiol; Norelgestromin?
Yes. Several phase II and III trials are investigating low-dose patches, extended wear options, and formulations aimed at reducing thrombotic risks, with results expected over the next few years.

2. How does the safety profile of the patch compare to oral contraceptives?
Clinical data suggest comparable safety, with the patch offering better adherence potential. However, it carries similar risks for thromboembolic events, necessitating screening and patient selection.

3. What factors influence market growth in emerging regions?
Factors include improving healthcare infrastructure, rising contraceptive awareness, regulatory approvals, affordability, and cultural acceptance. Local manufacturing partnerships further facilitate access.

4. How might innovations impact patient adherence?
Longer wear cycles and integrated health monitoring can improve adherence by reducing the frequency of application and providing real-time health data, thus enhancing user experience.

5. What are the regulatory challenges facing the drug’s global expansion?
Regulatory agencies mandate comprehensive safety data, especially concerning venous thromboembolism risks. Navigating diverse regulatory environments requires strategic planning and robust clinical evidence.


References
[1] Contraception. (2022). "Efficacy and safety of weekly transdermal contraceptive patches."
[2] The Journal of Women's Health. (2021). "Thrombotic risks associated with hormonal contraceptives."
[3] IQVIA. (2022). "Global contraceptive market analysis."
[4] FDA and EMA guidelines on hormone-based contraceptives.

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