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Showing 1–24 of 29 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Portia (LNG/EE) Clear all
Completed Phase 3 Interventional Accepts healthy volunteers

A Study to Evaluate Suppression of the Pituitary-Ovarian Axis With Three Different Oral Contraceptive Regimens

NCT00117273
View directory record Official record
Conditions
Healthy
Interventions
Seasonale [levonorgestrel (LNG)/ethinyl estradiol (EE)], Seasonique (LNG/EE and EE), Portia (LNG/EE)
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 35 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Temple, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2014 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 3 Interventional

Study Evaluating Levonorgestrel/Ethinyl Estradiol (LNG/EE) in PMS

NCT00161681
View directory record Official record
Conditions
Premenstrual Syndrome
Interventions
Levonorgestrel/Ethinyl Estradiol
Drug
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
48
States / cities
Huntsville, Alabama • Peoria, Arizona • Phoenix, Arizona + 40 more
Source: ClinicalTrials.gov public record
Updated Feb 7, 2013 · Synced Sep 25, 2026, 10:56 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Quantification of Immune Cells in Women Using Contraception (CHIC II)

NCT01873170
View directory record Official record
Conditions
HIV, Immune Cells (Mucosal and Systemic), Contraception
Interventions
levonorgestrel exposure, DMPA exposure, etonogestrel exposure, IUD insertion, subdermal contraceptive implant insertion
Drug · Device
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 34 Years · Female only
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 26, 2021 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Pharmacokinetics of Ethinyl Estradiol and Levonorgestrel When Given Alone and in Combination With Baxdrostat in Healthy Females of Non-childbearing Potential

NCT06657105
View directory record Official record
Conditions
Healthy Participants
Interventions
EE/LNG, Baxdrostat
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
35 Years to 75 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Brooklyn, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 6, 2025 · Synced Sep 25, 2026, 10:56 PM EDT
Recruiting Phase 2 Interventional

Role of Estrogen on Skeletal Outcomes in FHA

NCT07010146
View directory record Official record
Conditions
Bone Strength, Bone Density, FHA (Functional Hypothalamic Amenorrhea)
Interventions
transdermal 17β-E2 with cyclic progestin, oral 17β-E2 with cyclic progestin, transdermal EE+LNG
Drug
Lead sponsor
University of Virginia
Other
Eligibility
14 Years to 30 Years · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
2
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Multicenter Study to Evaluate the Effects of a 91-Day Extended Cycle Oral Contraceptive on Hemostatic Parameters in Healthy Women

NCT01252186
View directory record Official record
Conditions
Hemostasis, Oral Contraceptive
Interventions
91-day Levonorgestrel Oral Contraceptive, 28-day Levonorgestrel Oral Contraceptive, 28-day Desogestrel Oral Contraceptive
Drug
Lead sponsor
Teva Women's Health
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
265 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
21
States / cities
San Diego, California • Washington D.C., District of Columbia • Miami, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2015 · Synced Sep 25, 2026, 10:56 PM EDT
Terminated Phase 4 Interventional Results available

Treatment of Unacceptable Bleeding Patterns in ETG Implant Users With an Oral Contraceptive

NCT01963403
View directory record Official record
Conditions
Abnormal Uterine Bleeding, Unspecified, Uterine Bleeding Heavy
Interventions
EE 30mcg/LNG 150mcg, Placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
14 Years and older · Female only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
2
States / cities
Sacramento, California • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 11, 2017 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 2 Interventional Results available

A Multicenter Study to Evaluate the Efficacy of a 91-Day Extended Cycle Oral Contraceptive for Menstrually-Related Migraine Headaches

NCT00781456
View directory record Official record
Conditions
Migraine
Interventions
91-day Levonorgestrel Oral Contraceptive, Placebo
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 34 Years · Female only
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
22
States / cities
La Mesa, California • San Diego, California • San Francisco, California + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2017 · Synced Sep 25, 2026, 10:56 PM EDT
Withdrawn Phase 4 Interventional

Changes in Oral Contraceptive Hormones After Gastric Bypass Surgery

NCT01941134
View directory record Official record
Conditions
Bariatric Surgery Candidate, Contraception
Interventions
ethinyl estradiol-levonorgestrel
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 40 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 20, 2018 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study Comparing Two Manufacturing Processes for Levonorgestrel 90 mg/Ethinyl Estradiol 20 mg (LNG/EE) in Healthy, Cycling Women

NCT00319163
View directory record Official record
Conditions
Healthy
Interventions
levonorgestrel/ethinyl estradiol
Drug
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years to 35 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 6, 2009 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Potential Drug Interaction Study Between Vemircopan and Rosuvastatin, Metformin, Levonorgestrel/Ethinyl Estradiol-containing Oral Contraceptives, and Carbamazepine

NCT06071442
View directory record Official record
Conditions
Healthy Participants
Interventions
Vemircopan, Rosuvastatin, Metformin, Levonorgestrel / Ethinyl Estradiol, Carbamazepine
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Brooklyn, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 11, 2025 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 3 Interventional

Study Evaluating Combination of Levonorgestrel (LNG) and Ethinyl Estradiol (EE) in Premenstrual Dysphoric Disorder

NCT00128934
View directory record Official record
Conditions
Menstruation Disturbances, Premenstrual Syndrome
Interventions
levonorgestrel/ethinyl estradiol
Drug
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
744 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
69
States / cities
Scottsdale, Arizona • Tucson, Arizona • Jonesboro, Arkansas + 61 more
Source: ClinicalTrials.gov public record
Updated Dec 26, 2007 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Transdermal Contraceptive Delivery System (TCDS), Also Known as AG200-15 Patch Arm

NCT01236768
View directory record Official record
Conditions
Contraception
Interventions
AG200-15, Levora
Drug
Lead sponsor
Agile Therapeutics
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
407 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
21
States / cities
Mobile, Alabama • Green Valley, Arizona • Tucson, Arizona + 16 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2017 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Bleeding Patterns With Three Different Doses of DR-1031 Compared to Seasonale

NCT00394771
View directory record Official record
Conditions
Breakthrough Bleeding
Interventions
DR-1031, Seasonale®, Portia®
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
567 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
50
States / cities
Huntsville, Alabama • Tucson, Arizona • Little Rock, Arkansas + 45 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Sep 25, 2026, 10:56 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Evaluate the Effect of Vimseltinib on Pharmacokinetics of Combined Oral Contraceptive (Ethinyl Estradiol/Levonorgestrel)

NCT07539090
View directory record Official record
Conditions
Healthy Participants
Interventions
Vimseltinib, Combined Oral Contraceptive (COC) (ethinyl estradiol [EE]/levonorgestrel [LNG])
Drug
Lead sponsor
Deciphera Pharmaceuticals, LLC
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Oral Contraceptives and Body Mass Index

NCT01170390
View directory record Official record
Conditions
Body Weight, Contraceptive Usage
Interventions
All participants (Aviane), Portia, Aviane
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 30, 2015 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

An Open-label Study in Healthy Participants to Evaluate AZD0780 as an Object or Precipitant of CYP3A4-mediated Drug-drug Interactions

NCT06671405
View directory record Official record
Conditions
Dyslipidaemia
Interventions
AZD0780, Itraconazole, Carbamazepine, Midazolam, Ethinyl estradiol/levonorgestrel
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 75 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Brooklyn, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Efficacy and Safety of DR-103 for the Prevention of Pregnancy

NCT00996580
View directory record Official record
Conditions
Pregnancy Prevention
Interventions
DR-103
Drug
Lead sponsor
Teva Women's Health
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
3,597 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
94
States / cities
Montgomery, Alabama • Phoenix, Arizona • Tucson, Arizona + 83 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study of Continuous Oral Contraceptives and Doxycycline

NCT00480532
View directory record Official record
Conditions
Contraceptives, Oral
Interventions
Lybrel, Doxycycline, Oracea, Placebo, Doxycycline 100bid x5 days at the time of bleeding, Subantimicrobial doxycycline daily, placebo daily
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
2
States / cities
Honolulu, Hawaii • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 21, 2014 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Effect of GSK3640254 on the Pharmacokinetics of a Combination Oral Contraceptive

NCT03984825
View directory record Official record
Conditions
HIV Infections
Interventions
GSK3640254, Portia
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 26, 2020 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Postmarketing Open-Label Study to Assess Residual Levonorgestrel (LNG) and Ethinyl Estradiol (EE) Content of TWIRLA® (Levonorgestrel and Ethinyl Estradiol) Transdermal System

NCT07739589
View directory record Official record
Conditions
Residual Drug Amount of EE and LNG
Interventions
Twirla® (Levonorgestrel/Ethinyl Estradiol) Transdermal System
Drug
Lead sponsor
Insud Pharma
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Fair Lawn, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Multicenter Study to Evaluate the Effects of a 91-day Oral Contraceptive on Bone Mineral Density in Adolescent Females

NCT00924560
View directory record Official record
Conditions
Bone Mineral Density
Interventions
91-day Levonorgestrel Oral Contraceptive, 28-day Levonorgestrel Oral Contraceptive
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
12 Years to 18 Years · Female only
Enrollment
1,361 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
46
States / cities
Phoenix, Arizona • Tucson, Arizona • North Little Rock, Arkansas + 39 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2014 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Contraceptive Efficacy/Safety of a Low Dose EE/LNG Transdermal Contraceptive Delivery System

NCT01181479
View directory record Official record
Conditions
Contraception
Interventions
AG200-15 (cycles 1-13), Lessina crossover to AG200-15
Drug
Lead sponsor
Agile Therapeutics
Industry
Eligibility
17 Years to 40 Years · Female only
Enrollment
1,504 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
80
States / cities
Huntsville, Alabama • Mobile, Alabama • Chandler, Arizona + 77 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2018 · Synced Sep 25, 2026, 10:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Drug Interaction Between Povorcitinib and the Oral Contraceptive Levonorgestrel/Ethinyl Estradiol in Healthy Adult Females

NCT06380205
View directory record Official record
Conditions
Healthy Participants
Interventions
Povorcitinib, Levonorgestrel/Ethinyl estradiol
Drug
Lead sponsor
Incyte Corporation
Industry
Eligibility
18 Years to 60 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 2, 2024 · Synced Sep 25, 2026, 10:56 PM EDT