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Last Updated: March 23, 2025

CLINICAL TRIALS PROFILE FOR ESTRADIOL; LEVONORGESTREL


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All Clinical Trials for estradiol; levonorgestrel

Trial IDTitleStatusSponsorPhaseStart DateSummary
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.
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.
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.
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).
>Trial ID>Title>Status>Phase>Start Date>Summary
Showing 1 to 5 of 5 entries

Clinical Trial Conditions for estradiol; levonorgestrel

Condition Name

1711330024681012141618ContraceptionHealthyDrug InteractionsEndometriosis[disabled in preview]
Condition Name for estradiol; levonorgestrel
Intervention Trials
Contraception 17
Healthy 11
Drug Interactions 3
Endometriosis 3
[disabled in preview] 0
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Condition MeSH

3332000.511.522.53Premenstrual SyndromeHIV InfectionsEndometriosisPremenstrual Dysphoric Disorder[disabled in preview]
Condition MeSH for estradiol; levonorgestrel
Intervention Trials
Premenstrual Syndrome 3
HIV Infections 3
Endometriosis 3
Premenstrual Dysphoric Disorder 2
[disabled in preview] 0
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Clinical Trial Locations for estradiol; levonorgestrel

Trials by Country

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Trials by Country for estradiol; levonorgestrel
Location Trials
United States 155
Germany 19
China 12
Austria 8
Australia 6
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Trials by US State

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Trials by US State for estradiol; levonorgestrel
Location Trials
Florida 13
California 9
Arizona 8
Texas 8
Ohio 7
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Clinical Trial Progress for estradiol; levonorgestrel

Clinical Trial Phase

13.1%27.9%57.4%005101520253035Phase 4Phase 3Phase 2/Phase 3[disabled in preview]
Clinical Trial Phase for estradiol; levonorgestrel
Clinical Trial Phase Trials
Phase 4 8
Phase 3 17
Phase 2/Phase 3 1
[disabled in preview] 35
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Clinical Trial Status

73.8%12.3%6.2%7.7%005101520253035404550CompletedRecruitingNot yet recruiting[disabled in preview]
Clinical Trial Status for estradiol; levonorgestrel
Clinical Trial Phase Trials
Completed 48
Recruiting 8
Not yet recruiting 4
[disabled in preview] 5
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Clinical Trial Sponsors for estradiol; levonorgestrel

Sponsor Name

trials0123456789BayerWyeth is now a wholly owned subsidiary of PfizerAgile Therapeutics[disabled in preview]
Sponsor Name for estradiol; levonorgestrel
Sponsor Trials
Bayer 9
Wyeth is now a wholly owned subsidiary of Pfizer 8
Agile Therapeutics 5
[disabled in preview] 7
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Sponsor Type

68.2%28.4%00102030405060IndustryOtherNIH[disabled in preview]
Sponsor Type for estradiol; levonorgestrel
Sponsor Trials
Industry 60
Other 25
NIH 2
[disabled in preview] 1
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Ethinyl Estradiol and Levonorgestrel: Clinical Trials, Market Analysis, and Projections

Introduction

Ethinyl estradiol and levonorgestrel are two of the most commonly used components in combined oral contraceptives and other hormonal contraceptive methods. This article will delve into the current clinical trials, market analysis, and future projections for these drugs.

Clinical Trials Update

Pharmacokinetics Study

A recent clinical trial (NCT06657105) conducted by AstraZeneca aims to assess the effect of multiple doses of baxdrostat on the pharmacokinetics of a single dose of combined oral ethinyl estradiol and levonorgestrel in healthy female participants. This open-label, fixed-sequence study involves three periods where participants receive ethinyl estradiol/levonorgestrel (EE/LNG) alone, baxdrostat alone, and then both baxdrostat and EE/LNG together. The study focuses on the pharmacokinetic interactions between these drugs, which is crucial for understanding potential drug-drug interactions and ensuring the safety and efficacy of combined therapies[1].

Contraceptive Efficacy and Safety

A phase 3 study published in 2020 evaluated the efficacy, safety, and tolerability of a low-dose levonorgestrel/ethinyl estradiol transdermal delivery system (TDS). The study enrolled 2032 women and found that the TDS was effective in preventing pregnancy, with a Pearl Index of 5.8 pregnancies per 100 woman-years. However, the efficacy was reduced in women with a BMI ≥30 kg/m². The study also highlighted that the safety and tolerability profile of the TDS was consistent with other combined hormonal contraceptives[3].

Market Analysis

Market Growth and Trends

The combined oral contraceptive market, which includes ethinyl estradiol and levonorgestrel, is projected to experience significant growth from 2025 to 2033. This growth is driven by increasing demand for contraception, rising female participation in the workforce, and the growing popularity of long-acting reversible contraceptives (LARCs). The market size for these drugs is expected to reach a substantial figure by 2033, representing a notable CAGR[2].

Regional Market Insights

North America and Europe are currently the largest markets for ethinyl estradiol and levonorgestrel, driven by high contraceptive use rates and strong healthcare infrastructure. However, emerging markets in Asia-Pacific and Latin America are expected to exhibit promising growth due to increasing economic development and changing societal norms. These regions offer untapped potential for market expansion[2].

Key Players and Market Strategies

Key players in the market include Teva, Pfizer, Aurobindo Pharma, and Laboratories Leon Farma. These companies are focusing on product innovation, expanding their global presence, and forming strategic partnerships to capture a larger market share. For example, Lupin and Teva have partnered for distribution in emerging markets, while Amneal Pharmaceuticals has acquired generic versions of these drugs to enhance their market position[2].

Market Projections

Global Market Size

The global levonorgestrel market, which is closely related to the ethinyl estradiol market, was valued at USD 0.052 billion in 2024 and is projected to reach USD 0.068 billion by 2032, exhibiting a CAGR of 3.3%. This growth is driven by increasing awareness and utilization of hormonal contraceptives, particularly during menopause[5].

Driving Factors

The market for ethinyl estradiol and levonorgestrel is driven by several factors, including:

  • Increasing Awareness: Growing awareness of sexual health and the importance of contraception.
  • Convenience and Effectiveness: Oral contraceptives are preferred for their ease of use and high efficacy.
  • Emerging Market Expansion: Untapped potential in developing countries.
  • Generic Competition: Loss of patent exclusivity leading to increased generic competition, which drives down prices[2][5].

Challenges and Restraints

Despite the positive outlook, the market faces several challenges:

  • Potential Side Effects: Hormonal contraceptives are associated with potential side effects, which can deter some users.
  • Cultural Barriers: Cultural and societal barriers in certain regions can limit the adoption of hormonal contraceptives.
  • Regulatory Hurdles: Strict regulatory approvals and safety monitoring can sometimes slow market growth[2].

Product Substitutes and Alternatives

Intrauterine Devices (IUDs)

IUDs are long-term, reversible contraceptives that offer an alternative to oral contraceptives. They are gaining popularity due to their convenience and effectiveness over extended periods[2].

Implantation Devices

Subdermal implants that release hormones are another alternative to oral contraceptives. These devices provide long-term contraception with minimal user intervention[2].

End User Concentration

High Concentration

Women of reproductive age seeking reliable birth control methods are the primary users of ethinyl estradiol and levonorgestrel. This demographic is highly concentrated in regions with high contraceptive use rates[2].

Mechanism of Action and Safety

Levonorgestrel as a Contraceptive

Levonorgestrel, commonly known as the morning-after pill, works by inhibiting or delaying ovulation. Recent FDA updates have clarified that levonorgestrel does not terminate pregnancy but rather prevents ovulation. This mechanism of action has been supported by numerous clinical studies[4].

Safety Profile

The safety profile of combined hormonal contraceptives, including those containing ethinyl estradiol and levonorgestrel, is generally favorable. However, they can be associated with hormone-related adverse events such as nausea and headache. In rare cases, more serious events like thromboembolic events can occur, particularly in women with higher BMIs[3].

Key Takeaways

  • Clinical Trials: Ongoing studies are focusing on pharmacokinetic interactions and the efficacy and safety of combined hormonal contraceptives.
  • Market Growth: The market for ethinyl estradiol and levonorgestrel is expected to grow significantly, driven by increasing demand and emerging market expansion.
  • Regional Insights: North America and Europe are the largest markets, but Asia-Pacific and Latin America show promising growth potential.
  • Key Players: Major pharmaceutical companies are innovating and expanding their presence to capture market share.
  • Driving Factors: Increasing awareness, convenience, and generic competition are key drivers of market growth.
  • Challenges: Potential side effects, cultural barriers, and regulatory hurdles are significant challenges.

FAQs

1. What is the projected market size for ethinyl estradiol and levonorgestrel by 2033?

The market size for these drugs is expected to reach a substantial figure by 2033, representing a notable CAGR, driven by increasing demand and emerging market expansion[2].

2. How do ethinyl estradiol and levonorgestrel work as contraceptives?

Ethinyl estradiol and levonorgestrel work by inhibiting or delaying ovulation and altering the midcycle hormonal changes necessary for ovulation and fertilization[4].

3. What are the potential side effects of ethinyl estradiol and levonorgestrel?

Common side effects include nausea, headache, and in rare cases, more serious events like thromboembolic events, particularly in women with higher BMIs[3].

4. Which regions are expected to dominate the market for ethinyl estradiol and levonorgestrel?

North America and Europe currently hold the largest market share, but emerging markets in Asia-Pacific and Latin America are expected to exhibit promising growth[2].

5. What are the key factors driving the growth of the ethinyl estradiol and levonorgestrel market?

Increasing awareness of sexual health, convenience and effectiveness of oral contraceptives, emerging market expansion, and generic competition are key drivers of market growth[2][5].

Sources

  1. AstraZeneca Clinical Trials: "An Open-label, Fixed Sequence Study to Assess the Effect of Multiple Doses of Baxdrostat on the Pharmacokinetics of Single Doses of Combined Oral Ethinyl Estradiol and Levonorgestrel in Healthy Female Participants of Non-childbearing Potential."
  2. Data Insights Market: "Ethinyl Estradiol and Levonorgestrel - Data Insights Market."
  3. PubMed: "Efficacy, safety, and tolerability of a levonorgestrel/ethinyl estradiol transdermal delivery system."
  4. JAMA Network: "The FDA Declares Levonorgestrel a Nonabortifacient."
  5. Business Research Insights: "Levonorgestrel Market Size, Share | Analysis Report, 2032."

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