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ClinicalTrials.gov public records Last synced Oct 21, 2026, 9:47 AM EDT

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Showing 1–24 of 101 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: PRG Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Vaginal Versus Intramuscular Progesterone for the Prevention of Recurrent Preterm Birth

NCT02913495
View directory record Official record
Conditions
Premature Birth
Interventions
Vaginal Progesterone, Intramuscular Progesterone (17 alpha hydroxprogesterone caproate)
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Springfield, Massachusetts • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 4 Interventional Results available

Progesterone Augmentation of Nicotine Replacement Therapy Study

NCT02685072
View directory record Official record
Conditions
Smoking Cessation
Interventions
Progesterone (200 mgs BID), Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Oct 21, 2026, 9:47 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Vaginal Progesterone for the Prevention of Preterm Birth in Women With Arrested Preterm Labor

NCT01840228
View directory record Official record
Conditions
Premature Birth, Obstetric Labor, Premature
Interventions
Micronized progesterone suppository
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 18, 2019 · Synced Oct 21, 2026, 9:47 AM EDT
Recruiting Phase 4 Interventional

Examining the Effects of Estradiol on Neural and Molecular Response to Reward

NCT05282277
View directory record Official record
Conditions
Depression, Psychosis, Anhedonia
Interventions
Transdermal Estradiol, Micronized Progesterone, Matching Placebo Patch, Raclopride C11
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
45 Years to 55 Years · Female only
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 21, 2026, 9:47 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Hyperandrogenemia and Altered Day-night LH Pulse Patterns

NCT03068910
View directory record Official record
Conditions
Hyperandrogenism, Polycystic Ovary Syndrome, Puberty
Interventions
Micronized progesterone, Spironolactone, Placebo
Drug
Lead sponsor
University of Virginia
Other
Eligibility
10 Years to 17 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Oct 21, 2026, 9:47 AM EDT
Withdrawn Phase 4 Interventional

Comparison of Vaginal and Intramuscular Progesterone in Vitrified-warmed Blastocyst Transfer Cycles

NCT02772120
View directory record Official record
Conditions
Infertility
Interventions
Vaginal progesterone gel (Crinone® 8%), Intramuscular Progesterone
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 50 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 9, 2019 · Synced Oct 21, 2026, 9:47 AM EDT
Not listed Not applicable Interventional

Assessment of the Sensitivity of the Hypothalamic GnRH Pulse Generator to Estradiol and Progesterone Inhibition

NCT01425541
View directory record Official record
Conditions
Hyperandrogenemia, Polycystic Ovary Syndrome (PCOS)
Interventions
estrace, Progesterone
Drug
Lead sponsor
University of Virginia
Other
Eligibility
8 Years to 18 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 2, 2023 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 4 Interventional Results available

Comparison of Crinone 8% Intravaginal Gel and IM Progesterone Supplementation for In Vitro Fertilization (IVF)

NCT00656201
View directory record Official record
Conditions
Infertility
Interventions
Crinone 8% Vaginal Gel, Intramuscular Progesterone
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 39 Years · Female only
Enrollment
468 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 22, 2011 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 4 Interventional

Vaginal Compared to Intramuscular Progesterone for Frozen Embryo Transfer

NCT02254577
View directory record Official record
Conditions
Infertility
Interventions
Endometrin® plus Progesterone in Oil (PIO), Progesterone in Oil (PIO) Only
Drug
Lead sponsor
Shady Grove Fertility Reproductive Science Center
Other
Eligibility
18 Years to 48 Years · Female only
Enrollment
1,139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
14
States / cities
Washington D.C., District of Columbia • Annapolis, Maryland • Baltimore, Maryland + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2018 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Perimenopausal Effects of Estradiol on Reward Responsiveness

NCT02255175
View directory record Official record
Conditions
Perimenopausal Depression
Interventions
Estradiol, Progesterone
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
44 Years to 55 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 12, 2019 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effects of Anorexia Nervosa on Peak Bone Mass

NCT01301183
View directory record Official record
Conditions
Anorexia Nervosa
Interventions
RhIGF-1 with transdermal 17-beta estradiol, Placebo and transdermal 17-beta estradiol
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
14 Years to 22 Years · Female only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

KEEPS Mammographic Density And Breast Health Ancillary Study

NCT02524561
View directory record Official record
Conditions
Mammographic Density, Abnormal Mammogram
Interventions
CEE pill, Estradiol patch, Active Progesterone, Placebo tablet, Placebo patch, Placebo progesterone
Drug · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
42 Years to 58 Years · Female only
Enrollment
517 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 8, 2017 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Early Phase 1 Interventional Results available

PRevention Of Methamphetamine Use Among Postpartum Women Trial (PROMPT)

NCT05128071
View directory record Official record
Conditions
Methamphetamine-dependence, Postpartum Abstinence
Interventions
Progesterone, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older · Female only
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 21, 2026, 9:47 AM EDT
Terminated Phase 2 Interventional Results available

Effect of Progesterone on Testosterone Concentrations and Breast Development in Transwomen

NCT04534881
View directory record Official record
Conditions
Transgender Persons
Interventions
Progesterone 200 MG, Placebo
Drug
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sex Steroids, Sleep, and Metabolic Dysfunction in Women

NCT00805207
View directory record Official record
Conditions
Polycystic Ovary Syndrome (PCOS), Obstructive Sleep Apnea, Obesity
Interventions
Progesterone, testosterone, glucocorticoid, continuous positive airway pressure, Estrogen, Control
Drug · Device · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 1, 2018 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 4 Interventional Results available

Does Oral Micronized Progesterone Shorten Time of Symptoms From Concussion

NCT01809639
View directory record Official record
Conditions
Concussion
Interventions
Progesterone, Placebo
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 44 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 28, 2018 · Synced Oct 21, 2026, 9:47 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Evaluating the Roles of Estrogen and Progesterone in Heart Metabolism

NCT00565916
View directory record Official record
Conditions
Postmenopausal Syndrome
Interventions
Estrogen, Progesterone, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
55 Years to 75 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 16, 2018 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 2 Interventional Results available

Impact of Progesterone on Stress Reactivity and Cannabis Use

NCT03729869
View directory record Official record
Conditions
Cannabis Use
Interventions
Progesterone, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 45 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Oct 21, 2026, 9:47 AM EDT
Not listed Early Phase 1 Interventional Accepts healthy volunteers

Androgen Blockade and Progesterone Augmentation of Gonadotropin Secretion

NCT04597099
View directory record Official record
Conditions
PCOS, Polycystic Ovary Syndrome
Interventions
Micronized progesterone, Placebo, Flutamide, Estradiol patch
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 30 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 2, 2023 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 4 Interventional Results available

Effect of Perimenstrual Ovarian Steroid Supplementation on Perimenstrual Suicidality

NCT03720847
View directory record Official record
Conditions
Suicidal Ideation
Interventions
Estradiol Transdermal Patch 0.1 mg/24 hrs, Oral Micronized Progesterone, Inactive Clear Patch, Placebo capsule
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Determining How Quickly Progesterone Slows LH Pulse Frequency

NCT00594217
View directory record Official record
Conditions
Normal, PCOS
Interventions
oral micronized progesterone suspension, Placebo
Drug · Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2020
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 28, 2025 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Smoking, Sex Hormones, and Pregnancy

NCT01811225
View directory record Official record
Conditions
Nicotine Dependence, Contraception
Interventions
Low-dose Progesterone, High-dose Progesterone
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 13, 2020 · Synced Oct 21, 2026, 9:47 AM EDT
Active, not recruiting Phase 2 Interventional

The Role of Estrogen in the Neurobiology of Eating Disorders

NCT03740204
View directory record Official record
Conditions
Eating Disorders, Hypoestrogenemia
Interventions
17-β estradiol transdermal patches with cyclic progesterone, Placebo patch and pill
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
14 Years to 35 Years · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 21, 2026, 9:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Neurophysiology of Postpartum Depression in an Experimental Model of Pregnancy and Parturition

NCT01762943
View directory record Official record
Conditions
Postpartum Depression
Interventions
Leuprolide Acetate, Micronized estradiol, Progesterone
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
22 Years to 50 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 20, 2017 · Synced Oct 21, 2026, 9:47 AM EDT