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ClinicalTrials.gov public records Last synced Oct 2, 2026, 1:26 PM EDT

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Showing 49–71 of 71 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Estradiol/Norethindrone Acetate Clear all
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 13, 2026 · Synced Oct 2, 2026, 1:26 PM 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Withdrawn Phase 2 Interventional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 28, 2025 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

An Evaluation of the Pharmacokinetics of an Oral Contraceptive (Brevicon) When Co-administered With Albiglutide .

NCT01077505
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
albiglutide, Oral contraceptive (Brevicon)
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Phase 3 Interventional Results available

Long-Term Safety Study of Elagolix in Combination With Estradiol/Norethindrone Acetate for the Management of Heavy Menstrual Bleeding Associated With Uterine Fibroids in Premenopausal Women

NCT03271489
View directory record Official record
Conditions
Heavy Menstrual Bleeding, Uterine Fibroids
Interventions
Elagolix, Estradiol /norethindrone acetate (E2/NETA), E2/NETA Placebo, Elagolix Placebo
Drug · Other
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
478 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
155
States / cities
Birmingham, Alabama • Dothan, Alabama • Fairhope, Alabama + 112 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced Oct 2, 2026, 1:26 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Post Operative Continuous Active Combination Sex Steroids for the Prevention of Recurrent Endometrioma Formation

NCT00999479
View directory record Official record
Conditions
Endometrioma
Interventions
Norethindrone acetate and ethinyl estradiol tablets, USP, ferrous fumarate (placebo) tablets
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 35 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 10, 2013 · Synced Oct 2, 2026, 1:26 PM EDT
Completed No phase listed Observational Results available

Oral Contraceptive Hormone-free Interval Pituitary/ Ovarian Activity

NCT01953211
View directory record Official record
Conditions
Hypothalamic-pituitary-ovarian Axis, Gonadotropins, Ethinyl Estradiol, Contraceptive Efficacy
Interventions
combined oral contraceptives
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
64 participants
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 26, 2019 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study of Bleeding With Extended Administration of an Oral Contraceptive

NCT00338052
View directory record Official record
Conditions
Contraception
Interventions
Norethindrone 1 mg / ethinyl estradiol 20 mcg
Drug
Lead sponsor
Warner Chilcott
Industry
Eligibility
25 Years to 40 Years · Female only
Enrollment
207 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
23
States / cities
Phoenix, Arizona • Tempe, Arizona • Carmichael, California + 18 more
Source: ClinicalTrials.gov public record
Updated May 8, 2008 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Phase 3 Interventional Results available

Endometrial Safety Study

NCT00522873
View directory record Official record
Conditions
Postmenopause
Interventions
0.25mg DRSP / 0.5mg E2 (BAY86-4891), 0.5mg NETA / 1.0mg E2 (Activella)
Drug
Lead sponsor
Bayer
Industry
Eligibility
40 Years to 65 Years · Female only
Enrollment
662 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
17
States / cities
Chandler, Arizona • San Diego, California • Denver, Colorado + 13 more
Source: ClinicalTrials.gov public record
Updated Dec 31, 2014 · Synced Oct 2, 2026, 1:26 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Oral Contraceptive Ethinyl Estradiol Dose Effect on Postpartum Depression and Sexual Functioning Scales

NCT02210702
View directory record Official record
Conditions
Postpartum Depressive Mood, Postpartum Sexual Function
Interventions
Ethinyl Estradiol 35mcg/Norethindrone 1mg, Ethinyl Estradiol 20mcg/Norethindrone 1mg
Drug
Lead sponsor
The Jones Institute
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2014
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 7, 2014 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Identifying Oxytocin Deficiency in Adults With Pituitary Disease

NCT06460948
View directory record Official record
Conditions
Arginine Vasopressin Deficiency, Oxytocin Deficiency
Interventions
Norethindrone Acetate-Ethinyl Estradiol
Drug
Lead sponsor
Elizabeth Austen Lawson
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Effect of IW-3718 on the Pharmacokinetics of Oral Contraceptive, Levothyroxine, Glyburide, and Digoxin in Healthy Adult Volunteers

NCT03856970
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Microgestin®, Levothyroxine, Glyburide, Digoxin, IW-3718
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced Oct 2, 2026, 1:26 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Estrogen Diastolic Heart Failure

NCT02693002
View directory record Official record
Conditions
Menopause
Interventions
Estradiol/Norethindrone acetate, Placebo
Drug
Lead sponsor
Gretchen Wells
Other
Eligibility
45 Years to 55 Years · Female only
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 8, 2018 · Synced Oct 2, 2026, 1:26 PM 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 27, 2019 · Synced Oct 2, 2026, 1:26 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Optimizing Ovulation Induction in the Poor Responder

NCT01200537
View directory record Official record
Conditions
IVF Poor Responders
Interventions
Estradiol, Oral Contraceptive Pills (OCP)
Drug
Lead sponsor
Duke University
Other
Eligibility
20 Years to 50 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 21, 2012 · Synced Oct 2, 2026, 1:26 PM 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 Sep 1, 2021 · Synced Oct 2, 2026, 1:26 PM 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 5, 2022 · Synced Oct 2, 2026, 1:26 PM EDT
Recruiting Phase 3 Interventional

A Phase 3B Study to Evaluate Bone Mineral Density With Long-Term Use of Relugolix Combination Tablet in Women With Uterine Fibroids or Endometriosis

NCT05862272
View directory record Official record
Conditions
Uterine Fibroids, Endometriosis
Interventions
Relugolix Combination Tablet
Drug
Lead sponsor
Sumitomo Pharma Switzerland GmbH
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
120
States / cities
Mobile, Alabama • Chandler, Arizona • Mesa, Arizona + 98 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Phase 2 Interventional Results available

The Effect of Hormonal Add-Back Therapy in Adolescents Treated With a GnRH Agonist for Endometriosis: A Randomized Trial

NCT00474851
View directory record Official record
Conditions
Endometriosis
Interventions
Norethindrone acetate + estrogens, norethindrone acetate + placebo
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
13 Years to 22 Years · Female only
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 30, 2015 · Synced Oct 2, 2026, 1:26 PM EDT
Recruiting Phase 3 Interventional

The Effect of Medical Management Following Excisional Surgery for Endometriosis: A Randomized Controlled Trial

NCT06439524
View directory record Official record
Conditions
Endometriosis
Interventions
40 mg relugolix, 1 mg estradiol, 0.5 mg norethindrone acetate
Drug
Lead sponsor
Main Line Health
Other
Eligibility
18 Years and older · Female only
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Wynnewood, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Phase 1 Interventional Results available

A Study of Pharmacokinetic Drug Interaction Study of the Hedgehog Pathway Inhibitor GDC-0449 in Combination With Rosiglitazone or Combined Oral Contraceptive in Patients With Locally Advanced or Metastatic Solid Tumors That Are Refractory to Standard Therapy or for Whom No Standard Therapy Exists

NCT01209143
View directory record Official record
Conditions
Solid Cancers
Interventions
Vismodegib, Rosiglitazone, Norethindrone/ethinyl estradiol
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
3
States / cities
Stanford, California • Detroit, Michigan • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2015 · Synced Oct 2, 2026, 1:26 PM EDT
Completed Early Phase 1 Interventional

Gender Disparity and Hormones in Cystic Fibrosis

NCT02036879
View directory record Official record
Conditions
Cystic Fibrosis (CF)
Interventions
Loestrin (norethindrone acetate and ethinyl estradiol)
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
2
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 31, 2020 · Synced Oct 2, 2026, 1:26 PM 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 28, 2021 · Synced Oct 2, 2026, 1:26 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

A Study to Assess Potential Drug-Drug Interactions of E2086 in Healthy Participants

NCT07766369
View directory record Official record
Conditions
Healthy Volunteers
Interventions
E2086
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
93 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 2, 2026, 1:26 PM EDT