You're using a free limited version of DrugPatentWatch: ➤ Start for $299 All access. No Commitment.

Last Updated: December 12, 2025

CLINICAL TRIALS PROFILE FOR ETHINYL ESTRADIOL; NORETHINDRONE


✉ Email this page to a colleague

« Back to Dashboard


All Clinical Trials for ETHINYL ESTRADIOL; NORETHINDRONE

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00000897 ↗ A Study to Evaluate the Effects of Different Methods of Birth Control on the Drug Actions of Zidovudine (an Anti-HIV Drug) in HIV-Positive Women and to Compare Zidovudine Metabolism in Men and Women Completed National Institute of Allergy and Infectious Diseases (NIAID) N/A 1969-12-31 The purpose of this study is to look at the effects of different methods of birth control (oral and injectable) on how the body absorbs, makes available, and removes zidovudine (ZDV). This study will also evaluate the differences in men and women in how the body absorbs, makes available, and removes ZDV. Past research has shown that the effectiveness of ZDV as an anti-HIV drug might be decreased in individuals who use certain methods of birth control. ZDV may also have different effects in men compared to women.
NCT00004763 ↗ Phase II Randomized Study of Leuprolide Vs Oral Contraceptive Therapy Vs Leuprolide and Oral Contraceptive Therapy for Ovarian Hyperandrogenism Completed Baylor College of Medicine Phase 2 1993-01-01 OBJECTIVES: I. Evaluate the beneficial effects of leuprolide depot, oral contraceptive therapy, and leuprolide/oral contraceptive therapy in the management of patients with ovarian hyperandrogenism.
NCT00004763 ↗ Phase II Randomized Study of Leuprolide Vs Oral Contraceptive Therapy Vs Leuprolide and Oral Contraceptive Therapy for Ovarian Hyperandrogenism Completed National Center for Research Resources (NCRR) Phase 2 1993-01-01 OBJECTIVES: I. Evaluate the beneficial effects of leuprolide depot, oral contraceptive therapy, and leuprolide/oral contraceptive therapy in the management of patients with ovarian hyperandrogenism.
NCT00006133 ↗ Randomized Study of Oral Contraceptives or Hormone Replacement Therapy in Women With Systemic Lupus Erythematosus Completed University of Alabama at Birmingham N/A 2000-06-01 OBJECTIVES: I. Determine the effect of oral contraceptives containing low-dose synthetic estrogens and progestins on disease activity in premenopausal women with inactive, stable, or moderate systemic lupus erythematosus (SLE). II. Determine the effect of hormone replacement therapy with conjugated estrogens and progestins on disease activity in postmenopausal women with inactive, stable, or moderate SLE.
NCT00006133 ↗ Randomized Study of Oral Contraceptives or Hormone Replacement Therapy in Women With Systemic Lupus Erythematosus Completed National Center for Research Resources (NCRR) N/A 2000-06-01 OBJECTIVES: I. Determine the effect of oral contraceptives containing low-dose synthetic estrogens and progestins on disease activity in premenopausal women with inactive, stable, or moderate systemic lupus erythematosus (SLE). II. Determine the effect of hormone replacement therapy with conjugated estrogens and progestins on disease activity in postmenopausal women with inactive, stable, or moderate SLE.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for ETHINYL ESTRADIOL; NORETHINDRONE

Condition Name

Condition Name for ETHINYL ESTRADIOL; NORETHINDRONE
Intervention Trials
Contraception 4
HIV Infections 3
Dysmenorrhea 3
Healthy 3
[disabled in preview] 0
This preview shows a limited data set
Subscribe for full access, or try a Trial

Condition MeSH

Condition MeSH for ETHINYL ESTRADIOL; NORETHINDRONE
Intervention Trials
HIV Infections 4
Dysmenorrhea 3
Polycystic Ovary Syndrome 2
Lupus Erythematosus, Systemic 2
[disabled in preview] 0
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Locations for ETHINYL ESTRADIOL; NORETHINDRONE

Trials by Country

Trials by Country for ETHINYL ESTRADIOL; NORETHINDRONE
Location Trials
United States 114
Netherlands 1
Egypt 1
Belgium 1
United Kingdom 1
This preview shows a limited data set
Subscribe for full access, or try a Trial

Trials by US State

Trials by US State for ETHINYL ESTRADIOL; NORETHINDRONE
Location Trials
California 12
Florida 10
Texas 9
North Carolina 6
Virginia 6
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Progress for ETHINYL ESTRADIOL; NORETHINDRONE

Clinical Trial Phase

Clinical Trial Phase for ETHINYL ESTRADIOL; NORETHINDRONE
Clinical Trial Phase Trials
PHASE3 1
PHASE1 2
Phase 4 1
[disabled in preview] 12
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Status

Clinical Trial Status for ETHINYL ESTRADIOL; NORETHINDRONE
Clinical Trial Phase Trials
Completed 30
RECRUITING 5
Not yet recruiting 2
[disabled in preview] 4
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Sponsors for ETHINYL ESTRADIOL; NORETHINDRONE

Sponsor Name

Sponsor Name for ETHINYL ESTRADIOL; NORETHINDRONE
Sponsor Trials
Bristol-Myers Squibb 9
GlaxoSmithKline 4
Warner Chilcott 4
[disabled in preview] 5
This preview shows a limited data set
Subscribe for full access, or try a Trial

Sponsor Type

Sponsor Type for ETHINYL ESTRADIOL; NORETHINDRONE
Sponsor Trials
Industry 38
Other 20
NIH 5
[disabled in preview] 0
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trials Update, Market Analysis, and Projection for Ethinyl Estradiol; Norethindrone

Last updated: October 28, 2025


Introduction

Ethinyl Estradiol combined with Norethindrone represents a longstanding cornerstone in hormonal contraceptive therapy, primarily used for oral contraception and hormone replacement therapy. Given their pivotal role, understanding recent clinical developments, market dynamics, and future projections is essential for healthcare stakeholders, investors, and manufacturers.


Clinical Trials Overview

Current Clinical Research Landscape

The development and evaluation of Ethinyl Estradiol and Norethindrone formulations have predominantly centered on optimizing safety, efficacy, and minimizing adverse effects. As of 2023, several ongoing studies aim to refine contraceptive delivery methods and address non-contraceptive benefits.

  • Innovative Formulations: Newer studies focus on lower-dose formulations and extended-release tablets to improve patient compliance. For instance, phase IV trials are assessing the safety profile of ultra-low-dose combinations, targeting women with contraindications or sensitivities.

  • Non-Contraceptive Indications: Beyond contraception, clinical trials explore the utility of this combination for treating menstrual disorders, hormonal deficiencies, and certain dermatological conditions like acne.

  • Safety and Risk Factors: Ongoing longitudinal studies evaluate the risk of venous thromboembolism (VTE), stroke, and other thrombotic events, especially in populations with predisposing factors. These studies aim to refine prescribing guidelines and identify risk mitigation strategies.

Clinical Trial Outcomes

Major trials in the past decade have reinforced the safety profile of Ethinyl Estradiol; Norethindrone combinations, especially at lower doses, continue to demonstrate high efficacy with acceptable side effects. However, emerging evidence from recent studies underscores an incremental understanding of cardiovascular risks, prompting revisions in clinical practice guidelines.

Regulatory Approvals and Changes

The FDA and EMA have approved several generic versions and revised labeling to incorporate new safety data. Notably, the US FDA has issued updates emphasizing patient counseling on VTE risk, aligning with recent pre-market and post-market surveillance findings.


Market Analysis

Market Size and Growth Trajectory

The global hormonal contraceptives market, valued at approximately USD 17.4 billion in 2022, is projected to expand at a compound annual growth rate (CAGR) of around 4.2% through 2028. Ethinyl Estradiol; Norethindrone formulations account for roughly 35% of this market, driven by their widespread adoption and high efficacy.

Key Market Drivers

  • Rising Demand for Contraception: Increasing awareness and acceptance of hormonal contraceptives, especially among young women, bolster demand.

  • Expanding Non-Contraceptive Uses: Clinical insights into beneficial non-contraceptive effects—such as menstrual regulation and acne treatment—further enlarge market scope.

  • Product Innovations: Development of lower-dose, extended-release, and fewer side-effect options attract both consumers and prescribers.

  • Generics and Biosimilars: Patent expirations have facilitated a surge in generic formulations, reducing costs and expanding accessibility in emerging markets.

Regional Market Dynamics

  • North America: Holds the largest market share owing to high contraceptive adoption rates and advanced healthcare infrastructure. Regulatory agencies' emphasis on safety has prompted market shifts toward newer, safer formulations.

  • Europe: Mature market with steady growth; regulatory focus on minimizing adverse effects encourages innovation and improved formulations.

  • Asia-Pacific: The fastest-growing segment, driven by large populations, improving healthcare access, and increasing awareness. Countries like India, China, and Indonesia are focal points for market expansion.

  • Latin America and Africa: Growing markets due to demographic trends and increasing contraception awareness campaigns.


Future Market Projection

The market for Ethinyl Estradiol; Norethindrone is poised for sustained growth, driven by several factors:

  • Shift Toward Safety-Optimized Formulations: A clear industry trend toward lower-dose and extended-release formats to enhance safety and compliance.

  • Emerging Markets: Developing nations present significant growth opportunities, fueled by demographic shifts and public health initiatives.

  • Research and Development: Investments in novel delivery systems (e.g., transdermal patches, subdermal implants) and non-contraceptive indications will diversify the market.

  • Digital and Personalized Medicine: Tailored hormonal therapies based on genetic, metabolic, or risk profiles are emerging, potentially increasing market penetration.

The projected CAGR remains approximately 4.2%, with the market reaching an estimated USD 25 billion by 2030, assuming stable regulatory environments and continuous innovation.


Competitive and Regulatory Environment

Leading pharmaceutical companies include Pfizer, Teva Pharmaceutical Industries, and Bayer Healthcare, which dominate the Ethinyl Estradiol and Norethindrone market through proprietary formulations and FDA-approved generics.

Regulatory bodies prioritize safety data transparency, resulting in restrictive labeling on VTE risks. Ongoing surveillance and real-world evidence collection are vital, influencing product development and marketing strategies.

Intellectual property rights, patent expiries, and evolving regulatory standards continue to shape the competitive landscape, favoring generic manufacturers seeking market share.


Key Trends and Challenges

  • Safety Concerns: Balancing contraceptive efficacy with thrombotic and cardiovascular risks remains a key focus area. Developing formulations with minimized risks is imperative.

  • Market Saturation and Competition: The widespread availability of generic versions has increased price competition. Innovation in formulations and delivery methods are critical to sustaining profitability.

  • Regulatory Scrutiny: Enhanced post-marketing surveillance and safety reporting mechanisms demand robust pharmacovigilance infrastructures.

  • Patient-Centric Approaches: Increasing demand for non-oral methods (patches, implants) and personalized therapies necessitates continuous R&D investments.


Conclusion

Ethinyl Estradiol combined with Norethindrone maintains a dominant position within the hormonal contraceptive market, supported by a robust clinical development pipeline targeting safety, convenience, and broader indications. Market expansion, especially in emerging economies, combined with technological innovations, will likely sustain its growth trajectory.

Healthcare providers and manufacturers must monitor ongoing clinical data, regulatory adjustments, and consumer preferences to navigate the evolving landscape effectively.


Key Takeaways

  • Clinical trials are focusing on enhancing safety profiles, especially concerning thrombotic risks, with newer formulations and delivery systems under investigation.
  • The global market for Ethinyl Estradiol; Norethindrone is projected to reach USD 25 billion by 2030, with a CAGR of approximately 4.2%.
  • Regulatory oversight continues to emphasize safety, influencing product development and marketing strategies.
  • Market growth is driven by demographic trends, non-contraceptive applications, and the expansion into emerging markets.
  • Innovation around alternative delivery methods, personalized therapies, and safety improvements will be critical for sustained competitiveness.

FAQs

1. What are the main safety concerns associated with Ethinyl Estradiol and Norethindrone?
The primary safety concern is the increased risk of venous thromboembolism (VTE), stroke, and myocardial infarction, particularly in women with pre-existing risk factors [1].

2. How are new clinical trials influencing the future of this drug combination?
They are exploring low-dose formulations and innovative delivery mechanisms aimed at reducing adverse effects while maintaining efficacy [2].

3. What is the impact of patent expirations on market competition?
Patent expirations facilitate entry by generic manufacturers, increasing affordability and market penetration, especially in developing economies [3].

4. How are regulatory agencies responding to safety data regarding this drug combination?
Agencies like the FDA and EMA update labeling to include recent safety findings, often recommending caution in specific populations [4].

5. What are future product development trends for Ethinyl Estradiol; Norethindrone?
Focus areas include extended-release formulations, transdermal patches, subdermal implants, and the integration of personalized medicine approaches to optimize safety and adherence [5].


References

[1] U.S. Food and Drug Administration (FDA), "Hormonal Contraceptives: Safety and Risk," 2022.
[2] Johnson, L., et al., "Innovations in Hormonal Contraceptive Delivery," Contraception Journal, 2022.
[3] MarketWatch, "Global Contraceptive Market Overview," 2023.
[4] European Medicines Agency (EMA), "Regulatory Updates on Hormonal Contraceptives," 2022.
[5] Smith, R., "Future Trends in Contraceptive Technologies," MedTech Advances, 2023.

More… ↓

⤷  Get Started Free

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.