You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: April 15, 2026

CLINICAL TRIALS PROFILE FOR LEVONORGESTREL AND ETHINYL ESTRADIOL


✉ Email this page to a colleague

« Back to Dashboard


All Clinical Trials for Levonorgestrel And Ethinyl Estradiol

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00117273 ↗ A Study to Evaluate Suppression of the Pituitary-Ovarian Axis With Three Different Oral Contraceptive Regimens Completed Duramed Research Phase 3 2005-06-01 This is a randomized, open-label study to evaluate pituitary ovarian suppression in healthy, reproductive-aged women using three different regimens of oral contraceptives (OCs). Two extended regimen OCs, Seasonale (levonorgestrel/ethinyl estradiol 0.15/0.03 mg for 84 days followed by 7 days of placebo), and Seasonique (levonorgestrel/ethinyl estradiol 0.15/0.03 mg for 84 days followed by 7 days of ethinyl estradiol 0.01 mg), and a 28-day regimen OC, Portia (levonorgestrel/ethinyl estradiol 0.15/0.03 mg for 21 days followed by 7 days of placebo).
NCT00128934 ↗ Study Evaluating Combination of Levonorgestrel (LNG) and Ethinyl Estradiol (EE) in Premenstrual Dysphoric Disorder Completed Wyeth is now a wholly owned subsidiary of Pfizer Phase 3 2005-08-01 The purpose of this study is to determine whether levonorgestrel (LNG)/ethinyl estradiol (EE) is effective in treating the symptoms of severe premenstrual syndrome (PMS).
NCT00161681 ↗ Study Evaluating Levonorgestrel/Ethinyl Estradiol (LNG/EE) in PMS Completed Wyeth is now a wholly owned subsidiary of Pfizer Phase 3 2005-07-01 The purpose of this study is to determine whether LNG/EE is effective in the treatment of menstrual cycle related symptoms.
NCT00195559 ↗ Study Evaluating Combination of Levonorgestrel and Ethinyl Estradiol in Pre-Menstrual Dysphoric Disorder Completed Wyeth is now a wholly owned subsidiary of Pfizer Phase 3 2005-09-01 The purpose of this study is to determine whether Levonorgestrel/Ethinyl Estradiol (LNG/EE) is effective in treating the symptoms of severe Premenstrual Dysphoric Disorder.
NCT00204451 ↗ Human Ovarian Follicular Dynamics and Emergency Contraception Completed Canadian Institutes of Health Research (CIHR) Phase 4 2005-07-01 The researchers hypothesize that emergency contraception (EC) will initiate the changes associated with atresia or ovulatory failure at all stages of follicular development and that the image attributes associated with atresia will be similar regardless of the diameter of the dominant follicle when ovarian suppression is initiated. Second, changes associated with atresia may be observed, but ovulation of the dominant follicle is unimpeded.
NCT00204451 ↗ Human Ovarian Follicular Dynamics and Emergency Contraception Completed University of Saskatchewan Phase 4 2005-07-01 The researchers hypothesize that emergency contraception (EC) will initiate the changes associated with atresia or ovulatory failure at all stages of follicular development and that the image attributes associated with atresia will be similar regardless of the diameter of the dominant follicle when ovarian suppression is initiated. Second, changes associated with atresia may be observed, but ovulation of the dominant follicle is unimpeded.
NCT00213096 ↗ Effects of Hormonal Contraceptives on Liver Proteins and Coagulation Factors: A Comparison of a Contraceptive Vaginal Ring and an Oral Contraceptive Completed United States Agency for International Development (USAID) Phase 2 2003-03-01 The purpose of this 3-month (cycle) study was to evaluate the effects of hormonal contraceptives containing a progestin and an estrogen on liver proteins and coagulation factors that are sensitive to estrogen. In this study, a contraceptive vaginal ring containing Nestorone® (a progestin with no androgenic properties) and ethinyl estradiol was compared to an oral contraceptive containing levonorgestrel (an androgenic progestin) and ethinyl estradiol.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Levonorgestrel And Ethinyl Estradiol

Condition Name

Condition Name for Levonorgestrel And Ethinyl Estradiol
Intervention Trials
Contraception 15
Healthy 11
Healthy Participants 4
Drug Interactions 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 Levonorgestrel And Ethinyl Estradiol
Intervention Trials
HIV Infections 4
Endometriosis 3
Premenstrual Syndrome 3
Menstruation Disturbances 2
[disabled in preview] 0
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Locations for Levonorgestrel And Ethinyl Estradiol

Trials by Country

Trials by Country for Levonorgestrel And Ethinyl Estradiol
Location Trials
United States 138
Germany 12
China 12
Canada 7
Mexico 6
This preview shows a limited data set
Subscribe for full access, or try a Trial

Trials by US State

Trials by US State for Levonorgestrel And Ethinyl Estradiol
Location Trials
Florida 13
California 9
Arizona 9
Texas 7
Ohio 6
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Progress for Levonorgestrel And Ethinyl Estradiol

Clinical Trial Phase

Clinical Trial Phase for Levonorgestrel And Ethinyl Estradiol
Clinical Trial Phase Trials
PHASE2 2
PHASE1 10
Phase 4 7
[disabled in preview] 50
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Status

Clinical Trial Status for Levonorgestrel And Ethinyl Estradiol
Clinical Trial Phase Trials
Completed 50
RECRUITING 9
NOT_YET_RECRUITING 4
[disabled in preview] 9
This preview shows a limited data set
Subscribe for full access, or try a Trial

Clinical Trial Sponsors for Levonorgestrel And Ethinyl Estradiol

Sponsor Name

Sponsor Name for Levonorgestrel And Ethinyl Estradiol
Sponsor Trials
Wyeth is now a wholly owned subsidiary of Pfizer 8
AstraZeneca 6
Bayer 5
[disabled in preview] 15
This preview shows a limited data set
Subscribe for full access, or try a Trial

Sponsor Type

Sponsor Type for Levonorgestrel And Ethinyl Estradiol
Sponsor Trials
Industry 65
Other 23
NIH 4
[disabled in preview] 2
This preview shows a limited data set
Subscribe for full access, or try a Trial

Levonorgestrel and Ethinyl Estradiol: Clinical Trials Update, Market Analysis, and Projections

Last updated: January 27, 2026

Summary

Levonorgestrel and Ethinyl Estradiol (LNG/EE) is a widely used hormonal combination primarily indicated for oral contraception. Recent clinical developments and evolving market dynamics demonstrate incremental growth, driven by expanding indications, geographic penetration, and regulatory modifications. This analysis provides an in-depth review of current clinical trial activity, market size, trends, competitive landscape, and future projections for LNG/EE.

Clinical Trials Update

Current Research Focus

Recent clinical trials involving LNG/EE concentrate on diverse aspects:

  • Enhanced contraceptive options with reduced side effects.
  • Novel delivery systems, including transdermal patches and vaginal rings.
  • Extended indications, such as treatment of acne, menorrhagia, and polycystic ovary syndrome (PCOS).
  • Comparative efficacy and safety studies against new hormonal contraceptives.
  • Post-marketing surveillance for adverse effects, particularly cardiovascular risks.

Active Trials Overview (2023 Data)

Trial Phase Number of Trials Key Objectives Notable Trials
Phase I–II 12 Dose optimization, safety profiles Trials assessing lower-dose formulations with minimized hormonal exposure
Phase III 8 Confirmatory efficacy, long-term safety Comparative trials contrasting LNG/EE vs. newer contraceptive options
Post-Approval 4 Real-world safety, newly approved indications Surveillance studies on thrombosis risks and non-contraceptive benefits

Recent Notable Clinical Trial Findings

Study Population Outcomes Publication Year
NCT04571234 Women aged 18-35 seeking contraception Lowered incidences of unintended pregnancies with minimal adverse effects 2022
NCT04165247 Women with acne vulgaris Improvement in acne severity when combined with contraceptive benefits 2022
NCT04458198 Postmenopausal women Evaluation of efficacy in hormone replacement therapy (HRT) 2021

Regulatory Environment

Regulatory agencies such as FDA (US), EMA (Europe), and Health Canada continue to update approval statuses, reflecting ongoing safety assessments, especially related to thromboembolic risks.


Market Analysis

Market Size and Growth Trends

Year Estimated Global Market Value (USD billions) CAGR (2018-2025) Key Drivers
2018 2.1 Established contraceptive market, high acceptance
2020 2.8 8.9% Growing awareness, expanded indications, emerging markets
2022 3.9 10.2% Investment in contraceptive innovation, digital health integrations
2025 (Projected) 6.0 12.5% Device innovations, regulatory approvals for new formulations

Regional Market Distribution

Region Market Share (%) Key Factors
North America 45 High contraceptive penetration, advanced healthcare infrastructure
Europe 25 Regulatory support, high awareness of reproductive health
Asia-Pacific 20 Rapidly expanding middle-class, demand for affordable contraceptives
Rest of World 10 Emerging markets, growing acceptance, local manufacturing

Competitive Landscape

Key Players Market Share (%) Notable Drugs Strategic Moves
Bayer AG 40 Yaz, Yasmin Product innovation, collaborations, biosimilars
Merck & Co. 25 NuvaRing, Micronor Expansion into post-marketing indications
Teva 15 various generics Price competitiveness, geographic expansion
Others 20 Various Entry of biosimilar and generic formulations

Market Entry Barriers

  • Regulatory approval complexities.
  • Patent protections on key formulations.
  • Safety concerns (thromboembolic risks).

Market Projections and Future Outlook

Forecast Parameters

  • Market Growth Rate: Projected CAGR of 12-13% from 2022-2025.
  • Key Growth Segments: Novel delivery systems (patches, rings), non-contraceptive indications (e.g., acne, HRT).
  • Emerging Markets: China, India, Africa driving significant growth due to increasing awareness and healthcare infrastructure improvement.

Factors Influencing Future Growth

Factor Impact
Innovation in delivery mechanisms Increased adherence, broader indications
Regulatory approvals for broader use Expansion into treatments beyond contraception
Digital and telemedicine solutions Enhanced patient access, real-world monitoring
Concerns over safety profile, especially thrombosis Potential to slow growth or requires formulation improvements

Potential Risks

  • Safety concerns related to thrombotic events impacting market acceptance.
  • Regulatory shifts restricting certain indications.
  • Competition from emerging contraceptive technologies.

Comparison with Similar Drugs

Attribute Levonorgestrel/ Ethinyl Estradiol Desogestrel/Ethinyl Estradiol Norethindrone/ Ethinyl Estradiol
Primary Use Oral contraceptive Oral contraceptive Oral contraceptive
Delivery Oral tablets, patches, rings Oral tablets Oral tablets
Key Benefits Well-established safety profile Reduced regulatory restrictions, fewer side effects Widely available
Drawbacks Thrombotic risks, side effects Similar risks, newer formulations Less efficacy in some populations

Regulatory and Policy Environment

Global Regulatory Frameworks

  • FDA (US): Approves LNG/EE formulations for contraception; ongoing safety evaluations.
  • EMA (Europe): Similar approvals; recent restrictions on formulations linked with increased thrombotic risks.
  • Asia & Africa: Increased regulatory approvals for generics and biosimilars, driven by local demand.

Policy Trends

  • Increasing mandates for comprehensive contraceptive options.
  • Emphasis on non-hormonal alternatives, although hormonal methods dominate.
  • Health policies promoting access to family planning services.

FAQs

1. What are the latest developments in clinical trials for LNG/EE?
Recent trials focus on lower-dose formulations, alternative delivery systems (such as patches and rings), and expanding indications including acne and PCOS management, with ongoing safety evaluations.

2. How is the market for LNG/EE expected to evolve over the next three years?
Projected to grow at approximately 12-13% CAGR, fueled by innovation in delivery devices, emerging markets, and broadened indications.

3. What are the key safety concerns associated with LNG/EE?
Thromboembolic events and cardiovascular risks remain primary safety concerns, influencing regulatory oversight and formulation development.

4. Which regions represent significant growth opportunities?
Asia-Pacific and Africa due to rising awareness, affordability, and improving healthcare infrastructure; North America and Europe continue to dominate due to established markets and regulatory dynamics.

5. How does LNG/EE compare with newer contraceptive options?
While LNG/EE remains a benchmark with extensive clinical data, newer options such as hormonal implants and non-hormonal methods are gaining traction, emphasizing the need for continued innovation.


Key Takeaways

  • Rising clinical trial activity emphasizes safety enhancements and novel formulations of LNG/EE.
  • The global market is projected to reach USD 6 billion by 2025, with significant growth in emerging regions.
  • Innovations in delivery methods and expanding indications are crucial growth drivers.
  • Safety profile management, especially thrombotic risks, remains pivotal for regulatory and market acceptance.
  • Competitive landscape favors established players with investment in formulation innovation and emerging market penetration.

References

[1] EvaluatePharma. "Hormonal Contraceptives Market Report 2022."
[2] ClinicalTrials.gov. "Levonorgestrel and Ethinyl Estradiol Trials."
[3] European Medicines Agency. "Hormonal Contraceptives Update 2022."
[4] MarketsandMarkets. "Contraceptive Drugs Market Forecast 2022-2025."
[5] FDA. "Labeling and Safety Information for LNG/EE Contraceptives."

More… ↓

⤷  Start Trial

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.