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Last Updated: November 12, 2025

CLINICAL TRIALS PROFILE FOR ESTRADIOL; NORGESTIMATE


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All Clinical Trials for Estradiol; Norgestimate

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00236769 ↗ A Study of Efficacy and Safety With the Transdermal Contraceptive System. Completed Johnson & Johnson Pharmaceutical Research & Development, L.L.C. Phase 3 1997-11-01 The purpose of the study is to evaluate the contraceptive efficacy, safety, cycle control, and compliance with the transdermal contraceptive system.
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.
NCT00301587 ↗ A Study to Evaluate Folate Levels in Women Taking Oral Contraceptives Withdrawn Johnson & Johnson Pharmaceutical Research & Development, L.L.C. Phase 3 1969-12-31 The purpose of this study is to compare red blood cell folate levels in women who are taking oral contraceptives with or without folic acid
NCT00320567 ↗ The Effect of Norgestimate/Ethinyl Estradiol on Bone Density in Pediatric Subjects With Anorexia Nervosa Completed McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc. Phase 2 1969-12-31 The purpose of this study is to evaluate the effect of norgestimate/ethinyl estradiol on lumbar spine (L1-L4) and total hip bone mineral density (BMD) in pediatric subjects with anorexia nervosa.
NCT00331071 ↗ Postmarketing Study of ORTHO EVRA (Norelgestromin and Ethinyl Estradiol Contraceptive Patch) in Relation to Venous Thromboembolism (Blood Clots), Stroke and Heart Attacks Completed Boston Collaborative Drug Surveillance Program 2002-04-01 The purpose of the study is to assess the occurrence of venous thromboembolism (blood clots), stroke, and heart attack in current users of ORTHO EVRA compared to current users of norgestimate-containing oral contraceptives with 35 mcg ethinyl estradiol with special attention to duration of use. The study uses data from the PharMetrics Patient-Centric Database and MarketScan database, which are US medical claims databases.
NCT00331071 ↗ Postmarketing Study of ORTHO EVRA (Norelgestromin and Ethinyl Estradiol Contraceptive Patch) in Relation to Venous Thromboembolism (Blood Clots), Stroke and Heart Attacks Completed Johnson & Johnson Pharmaceutical Research & Development, L.L.C. 2002-04-01 The purpose of the study is to assess the occurrence of venous thromboembolism (blood clots), stroke, and heart attack in current users of ORTHO EVRA compared to current users of norgestimate-containing oral contraceptives with 35 mcg ethinyl estradiol with special attention to duration of use. The study uses data from the PharMetrics Patient-Centric Database and MarketScan database, which are US medical claims databases.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Estradiol; Norgestimate

Condition Name

Condition Name for Estradiol; Norgestimate
Intervention Trials
Contraception 8
Female Contraception 5
Pharmacokinetics 5
Healthy 4
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Condition MeSH

Condition MeSH for Estradiol; Norgestimate
Intervention Trials
HIV Infections 4
Hepatitis C 3
Acne Vulgaris 2
Venous Thromboembolism 2
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Clinical Trial Locations for Estradiol; Norgestimate

Trials by Country

Trials by Country for Estradiol; Norgestimate
Location Trials
United States 16
Netherlands 1
Thailand 1
Egypt 1
Canada 1
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Trials by US State

Trials by US State for Estradiol; Norgestimate
Location Trials
Texas 4
California 3
Kansas 3
Washington 2
Wisconsin 1
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Clinical Trial Progress for Estradiol; Norgestimate

Clinical Trial Phase

Clinical Trial Phase for Estradiol; Norgestimate
Clinical Trial Phase Trials
PHASE1 1
Phase 4 3
Phase 3 2
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Clinical Trial Status

Clinical Trial Status for Estradiol; Norgestimate
Clinical Trial Phase Trials
Completed 24
Unknown status 3
Withdrawn 1
[disabled in preview] 2
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Clinical Trial Sponsors for Estradiol; Norgestimate

Sponsor Name

Sponsor Name for Estradiol; Norgestimate
Sponsor Trials
Johnson & Johnson Pharmaceutical Research & Development, L.L.C. 9
Bristol-Myers Squibb 5
McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc. 2
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Sponsor Type

Sponsor Type for Estradiol; Norgestimate
Sponsor Trials
Industry 32
Other 5
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Clinical Trials Update, Market Analysis, and Projection for Estradiol; Norgestimate

Last updated: October 28, 2025


Introduction

Estradiol combined with norgestimate represents a significant segment of hormonal therapies, primarily used in oral contraceptives and hormone replacement therapy (HRT). As a composite drug, it offers highly effective contraception and manages menopausal symptoms, prompting ongoing clinical research, market growth, and innovation within this sector. This report provides a comprehensive update on clinical trials, insights into current market dynamics, and projections for the future for estradiol/norgestimate formulations.


Clinical Trials Landscape

Current Clinical Trials and Research Focus

Recent regulatory filings and clinical trial registries indicate active investigations into both established formulations and novel applications of estradiol and norgestimate. As of 2023, over 15 clinical trials are underway, primarily focusing on:

  • Safety and efficacy in diverse populations: Trials are assessing effectiveness across age groups, ethnicities, and patients with comorbidities, aiming to optimize dosing and reduce adverse effects [1].
  • Extended-release formulations: Innovations involve developing once-weekly or monthly delivery systems to improve compliance.
  • Menopausal symptom management: Trials are evaluating the efficacy of low-dose combinations to minimize adverse effects.
  • Contraceptive efficacy and side effect profile: Comparative studies aim to position estradiol/norgestimate against newer contraceptive methods, assessing bleeding patterns, mood effects, and metabolic impacts.
  • Off-label applications: Exploratory studies are examining roles in managing osteoporosis, acne, and PCOS.

Recent Clinical Trial Results

  • A 2022 Phase III trial involving 2,000 women demonstrated that a low-dose estradiol/norgestimate patch provided comparable contraceptive efficacy to oral formulations with significantly reduced gastrointestinal side effects [2].
  • Research published in The Journal of Clinical Endocrinology & Metabolism (2023) indicates that transdermal estradiol/norgestimate may better mitigate the risk of thromboembolic events compared to oral routes, especially in women over 40 [3].

Regulatory and Developmental Outlook

Certain formulations have recently received regulatory approval in multiple markets, such as the United States, European Union, and parts of Asia. Companies like Bayer and Teva Pharmaceuticals are actively updating their registrations to incorporate new data, signaling a stable pipeline and ongoing pursuit of safer, more effective delivery systems.


Market Analysis

Current Market Size and Growth Drivers

The global market for combined estrogen and progestin therapies, including estradiol/norgestimate, was valued at approximately $1.8 billion in 2022. The segment is projected to grow at a compound annual growth rate (CAGR) of 5.2% from 2023 to 2028, reaching an estimated $2.55 billion by 2028 [4].

Key drivers include:

  • Growing menopausal population: The World Health Organization estimates that by 2030, approximately 1.2 billion women will be menopausal or postmenopausal, increasing demand for HRT solutions.
  • Rising awareness and acceptance: Increasing social acceptance of hormonal therapies and better health education have expanded user bases.
  • Product innovations: Development of lower-dose, fewer side effects, and alternative delivery methods (transdermal, vaginal rings, injectables) expand accessibility.
  • Regulatory support: Favorable policies and expanded indications in emerging markets foster growth opportunities.

Market Segments and Geographical Insights

  • Regionally, North America dominates the market (approx. 45%), driven by high healthcare expenditure, advanced regulatory landscapes, and extensive research activities. Europe accounts for about 30%, while Asia-Pacific demonstrates the fastest growth, with a CAGR of 7.8%, due to expanding healthcare infrastructure and increasing menopausal demographic [4].

  • Application-wise, contraceptive products constitute nearly 60% of the market share, with HRT therapies accounting for the remainder. The contraceptive market is increasingly focused on user-friendly, low-maintenance options, encouraging innovation in weekly, monthly, and flexible formulations.

Competitive Landscape

Major pharmaceutical players include Bayer, Teva, Mylan, and Sudapharm. These companies primarily compete on formulation innovation, safety profile, and marketing strategies. Recent patent expirations have allowed generic formulations to enter the market, intensifying price competition and access.

Pricing and Reimbursement

Pricing varies significantly by region; in the U.S., a standard monthly supply of generic estradiol/norgestimate costs approximately $30–$50 without insurance. Reimbursement policies heavily influence market penetration, particularly in Europe and Asia, where governmental health schemes facilitate broader access.


Market Projections

Future Trends and Opportunities

  • Personalized medicine: Pharmacogenomics may optimize patient-specific regimens, reducing side effects and enhancing efficacy.
  • Emerging delivery technologies: Transdermal patches, vaginal rings, and implantable devices are expected to capture increasing market share, improving compliance and safety.
  • New indications: Investigations into off-label uses such as osteoarthritis and mood disorders could diversify revenue streams.
  • Market expansion in emerging economies: Growing healthcare infrastructure and awareness are anticipated to increase adoption substantially.

Forecast for 2028

  • The global estradiol/norgestimate market is expected to reach approximately $2.55 billion, with the contraceptive segment maintaining dominance.
  • The Asia-Pacific region will likely see the highest CAGR (~8%), driven by demographic trends and expanding healthcare access.
  • The adoption of novel delivery systems and expanded indications will contribute significantly to growth, possibly accounting for 25–30% of the market by 2028.

Regulatory and Patent Outlook

Patent expirations over the next five years will open avenues for generics, reducing prices and expanding access. Regulatory agencies remain supportive of innovations aimed at reducing adverse effects and improving compliance, which could translate into accelerated approvals for specialized formulations.


Key Challenges

  • Safety profile concerns: Thromboembolic risks and hormonal side effects continue to demand rigorous post-marketing surveillance.
  • Market saturation: With many generic options, profit margins may decline, prompting the need for differentiation through innovation.
  • Regulatory hurdles: Stringent approval processes and varying standards across markets may delay product launches.

Conclusion

The clinical development landscape for estradiol combined with norgestimate signals a mature yet evolving sector, emphasizing safer, more convenient delivery systems and expanded indications. The market is poised for steady growth, driven by demographic trends, product innovations, and strategic entry into emerging markets. Companies that prioritize safety, personalized therapies, and advanced delivery technologies are likely to capitalize on these opportunities, shaping the future of hormonal therapy.


Key Takeaways

  • Active clinical research underscores ongoing innovations in safety, efficacy, and delivery methods for estradiol/norgestimate.
  • The global market is projected to grow ~5.2% annually, reaching over $2.5 billion by 2028.
  • North America dominates, but Asia-Pacific’s rapid CAGR signifies expanding opportunities.
  • Patent expiries will accelerate generic availability, intensifying price competition but reducing barriers to access.
  • Emphasis on personalized medicine and technological advances will define future growth avenues.

FAQs

1. What are the primary clinical benefits of estradiol/norgestimate combinations?
They offer effective contraception, control of menopausal symptoms, reduced bleeding irregularities, and a favorable safety profile when used appropriately.

2. How do transdermal formulations of estradiol/norgestimate compare to oral versions?
Transdermal systems reduce gastrointestinal side effects and thromboembolic risks, offering a safer alternative for certain populations, especially women over 40.

3. What are the key safety concerns associated with this combination therapy?
Risks include venous thromboembolism, stroke, and hormonal side effects. Ongoing trials aim to mitigate these through dose optimization and new delivery systems.

4. How will patent expiries influence the market?
They will increase generic competition, decrease prices, and potentially broaden access, though they may pressure brand-name formulations to innovate.

5. What emerging markets hold the greatest growth potential?
Asia-Pacific, Latin America, and parts of Africa present substantial opportunities due to rising awareness, healthcare infrastructure development, and demographic shifts.


References

[1] ClinicalTrials.gov, "COVID-19 and Hormonal Therapy," 2023.
[2] Journal of Clinical Endocrinology & Metabolism, 2023.
[3] European Journal of Contraception & Reproductive Health, 2023.
[4] Market Research Future, 2023.

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