Last Updated: August 9, 2026

CLINICAL TRIALS PROFILE FOR LEVONORGESTREL


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All Clinical Trials for LEVONORGESTREL

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00064766 ↗ Norplant and Irregular Bleeding/Spotting Unknown status Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Phase 4 2003-02-01 Irregular or prolonged menstrual bleeding and/or spotting are common side effects in patients using progestin-only hormonal contraception such as levonorgestrel implants (Norplant). Doxycycline, a drug approved by the Food and Drug Administration (FDA) to treat gum disease, may reduce the occurrence of uterine bleeding and spotting in women who use Norplant. This study will evaluate the effects of doxycycline on uterine bleeding/spotting in women using Norplant.
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).
NCT00131885 ↗ Effects of St. John's Wort on the Oral Contraceptive Hormone Levonorgestrel Completed National Center for Complementary and Integrative Health (NCCIH) Phase 4 2005-08-01 This study will determine the effects of St. John's wort, a common herbal remedy, on metabolism of the female contraceptive hormone levonorgestrel.
NCT00131885 ↗ Effects of St. John's Wort on the Oral Contraceptive Hormone Levonorgestrel Completed University of Utah Phase 4 2005-08-01 This study will determine the effects of St. John's wort, a common herbal remedy, on metabolism of the female contraceptive hormone levonorgestrel.
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.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for LEVONORGESTREL

Condition Name

Condition Name for LEVONORGESTREL
Intervention Trials
Contraception 81
Healthy 21
HIV 11
Endometriosis 10
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Condition MeSH

Condition MeSH for LEVONORGESTREL
Intervention Trials
Hemorrhage 18
Emergencies 18
Hyperplasia 15
Endometrial Hyperplasia 15
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Clinical Trial Locations for LEVONORGESTREL

Trials by Country

Trials by Country for LEVONORGESTREL
Location Trials
United States 460
Germany 65
Canada 32
China 25
Japan 19
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Trials by US State

Trials by US State for LEVONORGESTREL
Location Trials
Pennsylvania 25
California 25
Florida 24
Colorado 23
Ohio 22
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Clinical Trial Progress for LEVONORGESTREL

Clinical Trial Phase

Clinical Trial Phase for LEVONORGESTREL
Clinical Trial Phase Trials
PHASE3 1
PHASE2 8
PHASE1 13
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Clinical Trial Status

Clinical Trial Status for LEVONORGESTREL
Clinical Trial Phase Trials
Completed 174
Recruiting 33
Not yet recruiting 24
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Clinical Trial Sponsors for LEVONORGESTREL

Sponsor Name

Sponsor Name for LEVONORGESTREL
Sponsor Trials
Bayer 40
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) 18
Novo Nordisk A/S 9
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Sponsor Type

Sponsor Type for LEVONORGESTREL
Sponsor Trials
Other 248
Industry 147
NIH 38
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Clinical Trials Update, Market Analysis, and Projection for Levonorgestrel

Last updated: July 22, 2026

Lev onorgestrel (LNG) is an established synthetic progestin used across multiple product categories including emergency contraception (EC), contraceptive therapy, hormone replacement therapy components, and certain gynecologic uses. Market performance is driven by (1) brand switching and generic penetration in EC and contraceptives, (2) guideline adoption and formulary position, (3) regulatory and labeling changes affecting access and dosing, and (4) supply and manufacturing continuity for oral and levonorgestrel IUD products. Clinical trial activity is ongoing at the margins, focused on formulation, dosing optimization, combinations, and device delivery (notably LNG IUD and EC-related regimens), while late-stage “new active ingredient” development is limited because LNG is long-established.

What clinical trials for levonorgestrel are active or recently updated in 2024-2026?

Clinical development for LNG in most jurisdictions concentrates on:

  • New dosing windows and regimen designs for emergency contraception
  • Heat-stable or bioavailability-optimized oral formulations
  • Fixed-dose combinations (where permitted and commercially strategic)
  • Device-related LNG delivery systems (most notably LNG IUD engineering and localized manufacturing/quality upgrades)

Emergency contraception: what trial directions are most common for levonorgestrel?

Key trial themes:

  • Non-inferiority / bridging studies for bioequivalence and formulation changes
  • Studies supporting updated label language on timing relative to ovulation risk
  • Comparability of different tablet strengths and generic-to-reference demonstration of performance

Featured snippet answer: The bulk of recent “clinical trial updates” for LNG are formulation and regimen optimization rather than new-moA innovation, with the highest translational volume tied to oral EC access and device delivery systems.

Levonorgestrel IUD: what is being tested?

Most clinical and post-approval development is aimed at:

  • Device design refinements that preserve systemic exposure while improving usability and manufacturability
  • Long-term observational data supporting safety, bleeding profiles, and discontinuation patterns
  • Bridging studies for new manufacturing sites or updated device components

How is the levonorgestrel market performing by region and product category?

LNG is a mature market with multiple sub-markets and different competitive dynamics:

  1. Emergency contraception (oral LNG EC)
  2. Levonorgestrel intrauterine system (LNG IUS/LNG IUD)
  3. Other hormone applications (selected markets, often lower visibility but relevant volumes)

North America

  • EC is highly genericized; brand share depends on payer and OTC positioning.
  • LNG IUS is competitive with other progestin-releasing IUDs and is supported by guideline-driven use for contraception and heavy menstrual bleeding indications where approved.

Europe

  • EC access varies by country regulatory status and classification (OTC vs prescription).
  • LNG IUS adoption is supported by established clinical evidence and payer coverage mechanisms.
  • Generic oral LNG EC is widespread; innovation concentrates on packaging, shelf life, and local regulatory submissions.

Asia-Pacific

  • Market growth is linked to population size, increasing contraceptive uptake, and expansion of OTC EC access in selected markets.
  • Manufacturing scale and price competition shape regional share, especially for oral EC.

Latin America & Middle East/Africa

  • Growth is constrained by procurement cycles and supply continuity.
  • LNG IUS and branded or semi-branded EC products can hold premium positioning where procurement favors trusted suppliers.

Featured snippet answer: The oral EC sub-market is price-competitive and generic-driven; the LNG IUS sub-market is more durable and governed by device lifecycle, procurement, and long-term clinical positioning.

How many LNG products and competitors are in the market (oral EC vs LNG IUD)?

Oral emergency contraception

Competitive set:

  • Multiple generic levonorgestrel tablets across OTC and prescription channels
  • Potential differentiation through packaging, dosing convenience, and regional availability

Typical commercial structure:

  • Reference brand holds limited exclusivity value due to mature IP status
  • Price competition dominates; wholesale and retail margins are compressed

Levonorgestrel IUD / IUS

Competitive set:

  • Competing long-acting progestin IUDs and differing device release profiles
  • Device competition is less about price alone and more about placement training, procurement contracts, and bleeding-related outcomes

What are the key regulatory drivers affecting levonorgestrel availability and label positioning?

Key regulatory factors that impact market access:

  • OTC switch decisions for oral LNG EC in specific countries
  • Label updates related to use timing, eligibility, and contraindication language
  • Pharmacovigilance updates that influence clinician confidence and procurement policies
  • Device regulatory approvals for LNG IUS updates and manufacturing changes

FDA and EMA pathways for LNG products

Most LNG products are routed via:

  • ANDA-style pathways for generics of oral formulations
  • Device pathways for LNG IUS manufacturing updates and design changes
  • Label updates via supplemental applications when data support altered language

Featured snippet answer: Regulatory change effects are usually channel and access-driven (OTC status, label language) rather than breakthrough clinical indications.

When do patent expirations and exclusivity shifts matter most for levonorgestrel?

For LNG, the central market consequence comes from:

  • The degree of remaining IP protection for specific brand formulations (including packaging and dose presentations in some geographies)
  • Device lifecycle protections in LNG IUS, where engineering and manufacturing-specific IP can extend commercially relevant time windows

Generic entry risk for levonorgestrel

  • Oral LNG EC: generic entry has largely already occurred in many markets; remaining risk is mainly in specific branded presentations or new-dose/packaging formats.
  • LNG IUS: generic device substitutes depend on regulatory pathways, clinical bridging requirements, and OEM-controlled design specifics. Risk depends on where competition already has approvals and whether local manufacturing exists.

Featured snippet answer: Market exclusivity for LNG largely depends on formulation and device-specific protections rather than active ingredient “new” IP.

What is the competitive landscape for levonorgestrel, and how does it affect pricing?

Oral EC

  • Pricing trends are dominated by generic substitution and retail/wholesale channel contracts.
  • Brands compete via visibility, convenience, and distribution strength rather than clinical differentiation.

LNG IUS

  • Device market is influenced by insertion training networks, procurement tender cycles, and bleeding-profile outcomes that affect discontinuation rates.
  • Pricing is shaped by tender competition and ongoing supply capacity.

What clinical outcomes matter commercially for levonorgestrel (bleeding, adherence, discontinuation)?

Across LNG product types, commercial decisions track:

  • Bleeding pattern acceptability (especially for LNG IUS)
  • Continuation rates and discontinuation reasons (pain, irregular bleeding)
  • Adherence and timely administration (oral EC)
  • Safety signals that trigger guideline changes or payer restrictions

Featured snippet answer: For LNG IUS, bleeding profile and continuation rates are the strongest commercial levers; for oral EC, speed of access and regimen simplicity drive uptake.

Market projection: where growth is most likely for levonorgestrel through 2029-2032

Given LNG’s mature status, projections are best expressed as category growth and share shifts:

  1. Oral EC: low-to-moderate volume growth tied to access expansion, but limited value growth due to pricing pressure.
  2. LNG IUS: steadier value growth driven by longer duration of use, procurement adoption, and competitive device tender cycles.

Base-case projection logic

  • Volume growth aligns with expanding contraceptive uptake and EC accessibility in countries where OTC use increases.
  • Value growth is constrained by generic penetration in oral products.
  • LNG IUS can outperform value growth because it faces different competitive and procurement barriers.

Scenario-based outlook

  • Bull case: accelerated OTC expansion for EC plus sustained LNG IUS uptake with stable supply.
  • Base case: continued steady growth with pricing discipline in oral EC and stable device tender outcomes.
  • Bear case: procurement volatility, supply constraints, and intensified device competition compress margins.

Commercial risk map: what could change revenue trajectory for levonorgestrel?

Supply and quality

  • Single-source components and device manufacturing capacity can create lead-time risk.
  • API and excipient availability can affect oral EC continuity.

Pricing and procurement

  • Oral EC margin compression is structurally linked to generic substitution.
  • LNG IUS tender pricing and reimbursement decisions can drive sudden share shifts.

Guideline and label changes

  • Updates affecting eligibility (for EC timing language) can shift utilization patterns.
  • Safety communications can reduce clinician confidence and payer utilization.

Key data table: what drives each levonorgestrel sub-market

Sub-market Primary customers Differentiators Main revenue risks Main growth drivers
Oral EC (levonorgestrel tablets) Retail pharmacy, clinics, OTC consumers OTC availability, packaging, price Generic price erosion OTC expansion, improved access
LNG IUS/IUD Public/private procurement, clinicians Device usability, bleeding outcomes, continuity Tender price compression Guideline adoption, uptake for bleeding indications
Other LNG uses Varies by indication Regulatory labeling and coverage Limited visibility, competition Local reimbursement expansion

Key Takeaways

  • Levonorgestrel is a mature progestin market split between highly price-competitive oral emergency contraception and steadier device-driven LNG IUS commercial dynamics.
  • Clinical trial updates are primarily formulation/regimen optimization and device lifecycle studies rather than new-moA innovation.
  • Market growth is most credible in category expansion and access improvements, not in premium pricing.
  • Revenue sensitivity is highest for oral EC due to generic substitution and lowest for LNG IUS where procurement cycles and device-specific positioning matter.

FAQs

  1. What are the most common formulation strategies being studied for levonorgestrel emergency contraception?
  2. How do LNG IUS bleeding profiles influence real-world discontinuation and commercial adoption?
  3. What regulatory events most affect OTC access and utilization for levonorgestrel oral products?
  4. How does tender pricing impact the competitive positioning of levonorgestrel IUD manufacturers?
  5. Which market segment of levonorgestrel is most resilient to generic price erosion?

References

  1. No sources were provided in the prompt.

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