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Showing 1–24 of 71 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Estradiol/norethindrone acetate Clear all
Completed Not applicable Interventional

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

NCT00000897
View directory record Official record
Conditions
HIV Infections
Interventions
Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
6
States / cities
San Francisco, California • Jacksonville, Florida • Albany, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2011 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional

SPIRIT 1: Efficacy and Safety Study of Relugolix in Women With Endometriosis-Associated Pain

NCT03204318
View directory record Official record
Conditions
Endometriosis Related Pain
Interventions
Relugolix, Estradiol/norethindrone acetate, Estradiol/norethindrone acetate placebo, Relugolix placebo
Drug
Lead sponsor
Myovant Sciences GmbH
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
638 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
43
States / cities
Dothan, Alabama • Mesa, Arizona • Scottsdale, Arizona + 37 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2021 · Synced Sep 24, 2026, 8:22 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Myomectomy vs Uterine Artery Embolization vs GnRh Antagonist for AUB-L

NCT04856306
View directory record Official record
Conditions
Heavy Menstrual Bleeding, Fibroid Uterus
Interventions
Groups 1 and 2 myomectomy and uterine artery embolization, respectively, are surgical/procedure, Elagolix Oral Product
Other · Drug
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Not applicable Interventional

Treatment of Non-Gestational Acute Uterine Bleeding: A Randomized Trial

NCT00350480
View directory record Official record
Conditions
Uterine Hemorrhage, Menorrhagia
Interventions
Provera, Combination Birth Control pills
Drug
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2015 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study Measuring the Effectiveness of BMS-986256 Combined With Oral Contraceptive in Healthy Female Participants

NCT04016753
View directory record Official record
Conditions
Healthy Participants
Interventions
BMS-986256, Loestrin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
21 Years to 40 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated May 30, 2022 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of BMS-986195 Combined With an Oral Contraceptive (Ethinyl Estradiol/Norethindrone) in Healthy Female Patients

NCT03262740
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
BMS-986195, Loestrin 1.5/30 (1.5 mg norethindrone acetate/30 μg ethinyl estradiol)
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
2
States / cities
South Miami, Florida • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 19, 2020 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Elagolix in Combination With Estradiol/Norethindrone Acetate for the Management of Heavy Menstrual Bleeding Associated With Uterine Fibroids in Premenopausal Women

NCT02654054
View directory record Official record
Conditions
Uterine Fibroids, Heavy Menstrual Bleeding
Interventions
Elagolix, Placebo for Estradiol/Norethindrone Acetate, Estradiol/Norethindrone Acetate, Placebo for Elagolix
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 51 Years · Female only
Enrollment
413 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
92
States / cities
Birmingham, Alabama • Mobile, Alabama • Costa Mesa, California + 79 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2020 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of BMS-986142 on the Pharmacokinetics of a Combined Oral Contraceptive (OC) Containing Ethinyl Estradiol (EE) and Norethindrone Acetate (NET) in Healthy Female Subjects

NCT02832180
View directory record Official record
Conditions
Arthritis
Interventions
OC containing EE and NET, BMS-986142
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
2
States / cities
Miami, Florida • Evansville, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 25, 2016 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Not applicable Interventional Results available

Data Analyses for Ancillary WISE Femhrt Hormone Replacement Study

NCT00600106
View directory record Official record
Conditions
Myocardial Ischemia
Interventions
1/10 NA/EE, Placebo
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2010
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional

SPIRIT 2: Efficacy and Safety Study of Relugolix in Women With Endometriosis-Associated Pain

NCT03204331
View directory record Official record
Conditions
Endometriosis Related Pain
Interventions
Relugolix, Estradiol/norethindrone acetate, Estradiol/norethindrone acetate placebo, Relugolix placebo
Drug
Lead sponsor
Myovant Sciences GmbH
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
623 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
41
States / cities
Andalusia, Alabama • Washington D.C., District of Columbia • Aventura, Florida + 36 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2021 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional Results available

Study of the Safety and Contraceptive Efficacy of Relugolix Combination Therapy in Women With Uterine Fibroids or Endometriosis Who Are at Risk for Pregnancy

NCT04756037
View directory record Official record
Conditions
Contraception
Interventions
Relugolix Combination Therapy
Drug
Lead sponsor
Sumitomo Pharma Switzerland GmbH
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
1,164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
109
States / cities
Mobile, Alabama • Chandler, Arizona • Mesa, Arizona + 89 more
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Norethindrone/Ethinyl Estradiol 0.4 mg/35 Mcg Chewable Tablets Under Non-Fasted Conditions

NCT01344369
View directory record Official record
Conditions
Healthy
Interventions
Norethindrone/Ethinyl Estradiol, FEMCON® Fe
Drug
Lead sponsor
Teva Pharmaceuticals USA
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 29, 2011 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional Results available

SPIRIT EXTENSION: Efficacy and Safety Extension Study of Relugolix in Women With Endometriosis-Associated Pain

NCT03654274
View directory record Official record
Conditions
Endometriosis
Interventions
Relugolix, Estradiol/norethindrone acetate
Drug
Lead sponsor
Myovant Sciences GmbH
Industry
Eligibility
18 Years to 51 Years · Female only
Enrollment
802 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
60
States / cities
Andalusia, Alabama • Scottsdale, Arizona • Tucson, Arizona + 50 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2023 · Synced Sep 24, 2026, 8:22 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Surgical Myomectomy Followed by Oral Myfembree Versus Standard of Care Trial (SOUL)

NCT05538689
View directory record Official record
Conditions
Metrorrhagia, Pelvic Pain, Menorrhagia, Leiomyoma
Interventions
Myfembree Oral Product
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
6
States / cities
Chicago, Illinois • Flossmoor, Illinois • Orland Park, Illinois + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of the Effects of Erythromycin on the Pharmacokinetics of Relugolix, Estradiol, and Norethindrone in Healthy Postmenopausal Women and on the Pharmacokinetics of Relugolix in Healthy Adult Men

NCT04714554
View directory record Official record
Conditions
Healthy
Interventions
Relugolix/E2/NETA FDC, Relugolix, Erythromycin
Drug
Lead sponsor
Myovant Sciences GmbH
Industry
Eligibility
18 Years to 65 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Hialeah, Florida
Source: ClinicalTrials.gov public record
Updated Aug 31, 2021 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Drug-drug Interaction of BMS-986196 With Oral Contraceptives in Healthy Female Participants

NCT05891262
View directory record Official record
Conditions
Healthy Female Volunteers
Interventions
BMS-986196, Loestrin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Sep 24, 2023 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Safety and Efficacy of an Oral Contraceptive

NCT00932321
View directory record Official record
Conditions
Prevention of Pregnancy
Interventions
Norethindrone Acetate/Ethinyl Estradiol 24 Days, Norethindrone Acetate /Ethinyl Estradiol 21 Days
Drug
Lead sponsor
Warner Chilcott
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
938 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004
U.S. locations
34
States / cities
Birmingham, Alabama • Phoenix, Arizona • Chico, California + 28 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2013 · Synced Sep 24, 2026, 8:22 AM EDT
Active, not recruiting No phase listed Observational

MYFEMBREE®: A Retrospective Cohort Study Using an Administrative Healthcare Database to Assess Pregnancy Outcomes in Women Treated With Relugolix Combination Therapy

NCT05739136
View directory record Official record
Conditions
Pregnancy Related, Pregnancy Complications, Pregnancy, High Risk
Interventions
Relugolix + Estradiol + Norethindrone Acetate
Drug
Lead sponsor
Sumitomo Pharma Switzerland GmbH
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
530 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Marlborough, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Elagolix in Combination With Estradiol/Norethindrone Acetate for the Management of Heavy Menstrual Bleeding Associated With Uterine Fibroids in Premenopausal Women (Replicate Study)

NCT02691494
View directory record Official record
Conditions
Uterine Fibroids, Heavy Menstrual Bleeding
Interventions
Elagolix, Placebo for Estradiol/Norethindrone Acetate, Estradiol/Norethindrone Acetate, Placebo for Elagolix
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 51 Years · Female only
Enrollment
378 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
103
States / cities
Birmingham, Alabama • Dothan, Alabama • Fairhope, Alabama + 89 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2021 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Tocilizumab in Combination With an Oral Contraceptive in Patients With Rheumatoid Arthritis

NCT01044498
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Tocilizumab, Ortho-Novum® 1/35
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 44 Years · Female only
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
6
States / cities
Little Rock, Arkansas • Beverly Hills, California • Ormond Beach, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2013 · Synced Sep 24, 2026, 8:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug Interaction Study of Danicopan

NCT04709094
View directory record Official record
Conditions
Healthy
Interventions
Danicopan, Warfarin, Bupropion, Ethinyl Estradiol/Norethindrone
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 13, 2021 · Synced Sep 24, 2026, 8:22 AM EDT
Terminated Phase 3 Interventional Results available

A Study to Evaluate Safety and Efficacy of Elagolix in Participants With Endometriosis With Associated Moderate to Severe Pain

NCT03343067
View directory record Official record
Conditions
Endometriosis
Interventions
elagolix, estradiol/norethindrone acetate (E2/NETA)
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
37
States / cities
Anniston, Alabama • Tucson, Arizona • Little Rock, Arkansas + 30 more
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Sep 24, 2026, 8:22 AM EDT
Withdrawn Phase 2 Interventional

Phenotyping of Idiopathic Pelvic Pain With Real-time Uterine Imaging and Relugolix-Combination Therapy Treatment

NCT06279195
View directory record Official record
Conditions
Pelvic Pain
Interventions
Relugolix (40 mg) /estradiol (1 mg)/norethisterone acetate (0.5 mg) oral tablet
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years to 35 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Sep 24, 2026, 8:22 AM EDT
Withdrawn Early Phase 1 Interventional Accepts healthy volunteers

Relative Desirability of Metformin vs. Birth Control Pill in Treating PCOS in Women of Later Reproductive Age

NCT03905941
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Metformin, Oral combined hormonal contraceptives
Drug
Lead sponsor
University of Virginia
Other
Eligibility
40 Years to 49 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 24, 2026, 8:22 AM EDT