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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Vaginal progesterone Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

A Pharmacokinetic Study to Evaluate the Bioequivalence of 2 Progesterone Vaginal Rings in Postmenopausal Women

NCT02092571
View directory record Official record
Conditions
Pharmacokinetics
Interventions
Progesterone vaginal ring,
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
40 Years to 70 Years · Female only
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 8, 2021 · Synced Sep 28, 2026, 4:49 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 17, 2019 · Synced Sep 28, 2026, 4:49 AM EDT
Completed No phase listed Observational

Endometrial Effects of Metformin Action in Women With Polycystic Ovarian Syndrome (PCOS)

NCT01070160
View directory record Official record
Conditions
Polycystic Ovarian Syndrome
Interventions
Endometrin (progesterone 100mg vaginal inserts), Metformin
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 42 Years · Female only
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 29, 2020 · Synced Sep 28, 2026, 4:49 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Progesterone for Maintenance Tocolysis: A Randomized Placebo Controlled Trial

NCT00946088
View directory record Official record
Conditions
Pregnancy Complications
Interventions
Progesterone, Polyethylene glycol&hydrogenated vegetable oil.
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Sep 28, 2026, 4:49 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 1, 2018 · Synced Sep 28, 2026, 4:49 AM EDT
Terminated Not applicable Interventional Results available

Cervical Pessary to Prevent Preterm Birth in Singleton Pregnancies With a Sonographically Measured Short Cervix

NCT02357394
View directory record Official record
Conditions
Premature Birth
Interventions
Arabin Pessary
Device
Lead sponsor
Gene Lee, MD
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
2
States / cities
Kansas City, Kansas • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 30, 2019 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Not applicable Interventional Results available

Pilot Study of Femring Estrogen Supplementation During Depo-Provera Initiation

NCT00563576
View directory record Official record
Conditions
Metrorrhagia
Interventions
Femring®, DepoProvera ®
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older · Female only
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 14, 2021 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Assessing the Endometrial Environment in Recurrent Pregnancy Loss and Unexplained Infertility

NCT03401918
View directory record Official record
Conditions
Recurrent Pregnancy Loss, Unexplained Infertility
Interventions
Uterine ERA and microbiome testing, Oral antibiotics and vaginal probiotics
Diagnostic Test · Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Sunnyvale, California
Source: ClinicalTrials.gov public record
Updated Mar 31, 2025 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 2 Interventional

Comparison of DR-2011 to a Progesterone Vaginal Gel for Luteal Phase Replacement

NCT00117468
View directory record Official record
Conditions
Infertility
Interventions
DR-2011, Progesterone 8% Vaginal Gel
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated May 11, 2014 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effect of Oral Estradiol and Progesterone Therapy on Vaginal Cytokines in Postmenopausal Women

NCT02224313
View directory record Official record
Conditions
Menopause
Interventions
oral estradiol 1.0 mg, oral progesterone 100 mg
Drug
Lead sponsor
Intira Sriprasert
Other
Eligibility
20 Years to 65 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 18, 2020 · Synced Sep 28, 2026, 4:49 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Impact of Vaginal and IM Progestins on the Cervix

NCT01954095
View directory record Official record
Conditions
Preterm Birth, Short Cervical Length
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
4
States / cities
Indianapolis, Indiana • Pittsburgh, Pennsylvania • Galveston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 3 Interventional

Hormone Replacement Therapy for Hot Flashes and/or Vaginal Symptoms in Postmenopausal Women Receiving Tamoxifen for Breast Cancer

NCT00026286
View directory record Official record
Conditions
Breast Cancer, Hot Flashes, Menopausal Symptoms
Interventions
conjugated estrogens, medroxyprogesterone
Drug
Lead sponsor
Eastern Cooperative Oncology Group
Network
Eligibility
18 Years to 120 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2007
U.S. locations
24
States / cities
Birmingham, Alabama • Chicago, Illinois • Decatur, Illinois + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2023 · Synced Sep 28, 2026, 4:49 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Vaginal Ecosystem and Network in the United States Study

NCT06472765
View directory record Official record
Conditions
Bacterial Vaginosis, Candidiasis, Urinary Tract Infections, Genitourinary Syndrome of Menopause, Lichen Sclerosus, Lichen Planus, Vulvodynia, Endometriosis, Ureaplasma Infections, Cancer, Desquamative Inflammatory Vaginitis
Interventions
Vaginal Swab Collection
Diagnostic Test
Lead sponsor
Vaginal Biome Science
Other
Eligibility
18 Years to 89 Years · Female only
Enrollment
3,250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
20
States / cities
Fullerton, California • Los Angeles, California • Pasadena, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2025 · Synced Sep 28, 2026, 4:49 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 8, 2019 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Vaginal Progesterone Versus Progesterone in Oil in Donor Egg Recipient In Vitro Fertilization Cycles Utilizing Vitrified Donor Eggs

NCT01465373
View directory record Official record
Conditions
Infertility
Interventions
Endometrin, Progesterone in Oil
Drug
Lead sponsor
Fertility Centers of Illinois
Other
Eligibility
21 Years to 49 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 3, 2011 · Synced Sep 28, 2026, 4:49 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

A Randomized Trial of Pessary in Singleton Pregnancies With a Short Cervix

NCT02901626
View directory record Official record
Conditions
Short Cervix, Preterm Delivery
Interventions
Arabin Cervical Pessary
Device
Lead sponsor
The George Washington University Biostatistics Center
Other
Eligibility
Female only
Enrollment
544 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
12
States / cities
Birmingham, Alabama • Chicago, Illinois • New York, New York + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

DMPA & High Dose Oral Progestin (MPA) Tablets in Outpatient Treatment of Acute Excessive Vaginal Bleeding

NCT01148420
View directory record Official record
Conditions
Dysfunctional Uterine Bleeding
Interventions
Medroxyprogesterone 17-Acetate, medroxyprogesterone acetate
Drug
Lead sponsor
Women's Health Care Clinic, Torrance, California
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2014 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 2Phase 3 Interventional

Vaginal Progesterone Supplementation in Women With PCOS Undergoing Ovulation Induction With Letrozole

NCT03440359
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Progesterone Vaginal Gel 8%, Letrozole Oral Tablet, pelvic ultrasound, Ovidrel 250 MCG Per 0.5 ML Prefilled Syringe, Intrauterine insemination or timed intercourse
Drug · Diagnostic Test · Other
Lead sponsor
Eastern Virginia Medical School
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 25, 2018 · Synced Sep 28, 2026, 4:49 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Prematurity Risk Assessment Combined With Clinical Interventions for Improving Neonatal outcoMEs

NCT04301518
View directory record Official record
Conditions
Preterm Labor, Preterm Birth
Interventions
Multimodal intervention strategy
Other
Lead sponsor
Sera Prognostics, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
6,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
18
States / cities
San Diego, California • New Haven, Connecticut • Newark, Delaware + 15 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Sep 28, 2026, 4:49 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Uterine Electrical Activity Before and After Progesterone Treatment for Preterm Labor

NCT01406197
View directory record Official record
Conditions
Preterm Labor
Interventions
Experimental: Vaginal progesterone, Experimental: Topical progesterone, Experimental: Intramuscular progesterone
Drug
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
17 Years to 40 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 25, 2022 · Synced Sep 28, 2026, 4:49 AM EDT
Withdrawn Phase 2Phase 3 Interventional Accepts healthy volunteers

Vaginal Progesterone in Twins With Short Cervix

NCT01812239
View directory record Official record
Conditions
Premature Birth
Interventions
Vaginal Progesterone gel., fetal fibronectin swab., Placebo gel
Drug · Procedure
Lead sponsor
Obstetrix Medical Group
Industry
Eligibility
18 Years to 60 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
San Jose, California
Source: ClinicalTrials.gov public record
Updated Dec 18, 2014 · Synced Sep 28, 2026, 4:49 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Mifepristone Induction for Fetal Demise

NCT02620904
View directory record Official record
Conditions
Intrauterine Fetal Demise, Fetal Death
Interventions
Mifepristone, placebo
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
16 Years and older · Female only
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 17, 2021 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 4 Interventional Results available

Menopur® Versus Follistim® in Polycystic Ovarian Syndrome (PCOS)

NCT00805935
View directory record Official record
Conditions
Polycystic Ovarian Syndrome, Infertility
Interventions
Menotropin, Progesterone vaginal insert, Follitropin beta, Progesterone in oil, leuprolide acetate
Drug
Lead sponsor
Ferring Pharmaceuticals
Industry
Eligibility
18 Years to 42 Years · Female only
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
6
States / cities
Littleton, Colorado • Clearwater, Florida • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2012 · Synced Sep 28, 2026, 4:49 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Clinical Trial to Evaluate the Efficacy and Safety of DR-2011 for In Vitro Fertilization

NCT00615251
View directory record Official record
Conditions
Infertility
Interventions
DR-2011, Crinone 8%
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 42 Years · Female only
Enrollment
1,297 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
29
States / cities
Tarzana, California • West Los Angeles, California • Westlake, California + 26 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2013 · Synced Sep 28, 2026, 4:49 AM EDT