Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 28, 2026, 12:18 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–22 of 22 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
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
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
Conditions
Endometriosis
Interventions
Naltrexone, Norethindrone Acetate, Placebo
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Hershey, Pennsylvania
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
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Pharmacokinetic Study of Colchicine With an Oral Contraceptive

NCT01040845
Conditions
Pharmacokinetics
Interventions
Norethindrone/Ethinyl Estradiol, Colchicine, Placebo (for Colchicine)
Drug
Lead sponsor
Mutual Pharmaceutical Company, Inc.
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Fargo, North Dakota
Conditions
Endometriosis
Interventions
Estradiol/Norethindrone Acetate, Placebo for Elagolix, Elagolix, Placebo for E2/NETA
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
681 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
188
States / cities
Birmingham, Alabama • Fairhope, Alabama • Mobile, Alabama + 140 more
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Progestin-Only Pill Use and Breastfeeding Study

NCT04965116
Conditions
Contraception, Breastfeeding
Interventions
Progestin Only Contraceptive Pills
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
La Jolla, California
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
Conditions
Heavy Menstrual Bleeding, Uterine Fibroid
Interventions
Relugolix, Estradiol/norethindrone acetate, Relugolix placebo, Estradiol/norethindrone acetate placebo
Drug
Lead sponsor
Myovant Sciences GmbH
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
382 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
89
States / cities
Birmingham, Alabama • Mesa, Arizona • Tucson, Arizona + 78 more
Conditions
Relapsing-remitting Multiple Sclerosis, Secondary-progressive Multiple Sclerosis, Primary-progressive Multiple Sclerosis
Interventions
estriol, Placebo, Norethindrone, Progestin Placebo
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2022
U.S. locations
4
States / cities
Los Angeles, California • Aurora, Colorado • Albuquerque, New Mexico + 1 more
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
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Estrogen Diastolic Heart Failure

NCT02693002
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
Conditions
Endometriosis
Interventions
norethindrone acetate (NETA), Placebo
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
13 Years to 24 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
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
Completed Not applicable Interventional Results available

Data Analyses for Ancillary WISE Femhrt Hormone Replacement Study

NCT00600106
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
Conditions
Uterine Fibroids, Heavy Menstrual Bleeding
Interventions
Estradiol/Norethindrone Acetate, Elagolix
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 51 Years · Female only
Enrollment
433 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
121
States / cities
Birmingham, Alabama • Dothan, Alabama • Fairhope, Alabama + 90 more
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Safety and Efficacy of an Oral Contraceptive

NCT00932321
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
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
Conditions
Heavy Menstrual Bleeding, Uterine Fibroid
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
388 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
76
States / cities
Andalusia, Alabama • Mobile, Alabama • Little Rock, Arkansas + 62 more
Conditions
Birth Control, Contraception, Implant, Breakthrough Bleeding, Uterine Bleeding
Interventions
Norethindrone acetate (NTA), Placebo
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
14 Years to 48 Years · Female only
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Temple, Texas
Terminated Phase 3 Interventional Results available

Cannabidiol and Management of Endometriosis Pain

NCT04527003
Conditions
Endometriosis, CBD, Pelvic Pain
Interventions
Cannabidiol (CBD) Extract, Norethindrone Acetate, Placebo
Drug · Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Hershey, Pennsylvania
Conditions
Uterine Leiomyoma, Uterine Fibroids
Interventions
Relugolix, Estradiol/norethindrone acetate, Placebo for relugolix, Placebo for E2/NETA
Drug
Lead sponsor
Myovant Sciences GmbH
Industry
Eligibility
18 Years to 51 Years · Female only
Enrollment
229 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
72
States / cities
Birmingham, Alabama • Mesa, Arizona • Tucson, Arizona + 61 more