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ClinicalTrials.gov public records Last synced Oct 22, 2026, 8:06 AM EDT

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Showing 1–24 of 38 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Ulipristal Clear all
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Efficacy Trial of CDB 2914 for Emergency Contraception

NCT00271583
View directory record Official record
Conditions
Emergency Contraception
Interventions
CDB-2914, levonorgestrel
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older · Female only
Enrollment
1,672 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2001
U.S. locations
6
States / cities
Los Angeles, California • Denver, Colorado • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 17, 2007 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparison of Blood Levels of Two Formulations of the Selective Hormone Receptor Modulator CDB-2914

NCT00041899
View directory record Official record
Conditions
Healthy
Interventions
CDB-2914, COB-2914
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Targeted Video Messaging About Emergency Contraception

NCT03774368
View directory record Official record
Conditions
Contraception
Interventions
Emergency contraception website, Emergency contraception video
Other
Lead sponsor
Planned Parenthood League of Massachusetts
Other
Eligibility
18 Years to 29 Years · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 16, 2019 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Use of the Synthetic Hormone CDB-2914 in Treating Symptoms of Menopause

NCT00009659
View directory record Official record
Conditions
Postmenopause
Interventions
CDB 2914
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
Female only
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 22, 2026, 8:06 AM EDT
Terminated Phase 2 Interventional Results available

Treatment of Menstrually Related Disorders With Continuous v. Interrupted Oral Contraceptives

NCT00089414
View directory record Official record
Conditions
Premenstrual Syndrome, PMS, Premenstrual Dysphoric Disorder, PMDD, Depression
Interventions
Ethinyl Estradiol/Drospirenone, Placebo, CDB 2914
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 45 Years · Female only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 25, 2017 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 3 Interventional Results available

Intervention to End Recurrent Unscheduled Bleeding Trial

NCT03118297
View directory record Official record
Conditions
Contraception, Bleeding
Interventions
Ulipristal Acetate, Placebo oral capsule
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 31, 2018 · Synced Oct 22, 2026, 8:06 AM EDT
Withdrawn Phase 4 Interventional

Effect of Ulipristal Acetate on Bleeding Patterns and Dysmenorrhea in Women With Adenomyosis

NCT03325868
View directory record Official record
Conditions
Adenomyosis, Heavy Uterine Bleeding, Dysmenorrhea
Interventions
Ulipristal Acetate
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 51 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 8, 2018 · Synced Oct 22, 2026, 8:06 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Disparities in Emergency Contraceptive Metabolism Dictate Efficacy

NCT05674513
View directory record Official record
Conditions
Contraceptive Usage
Interventions
Ulipristal acetate
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 4 Interventional Results available

Ulipristal for Endometriosis-related Pelvic Pain

NCT02213081
View directory record Official record
Conditions
Endometriosis
Interventions
Ulipristal
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Oct 22, 2026, 8:06 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Safety, Tolerability, and Efficacy of ellaOne® (Ulipristal Acetate) for Emergency Contraception in Postmenarcheal Adolescent Girls and Women

NCT01107106
View directory record Official record
Conditions
Contraception
Interventions
ellaOne® (ulipristal acetate)
Drug
Lead sponsor
HRA Pharma
Industry
Eligibility
Female only
Enrollment
579 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
4
States / cities
Denver, Colorado • Lakewood, Colorado • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 15, 2013 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Not applicable Interventional Results available

The Effect of Jazz on Postoperative Pain and Stress in Patients Undergoing Elective Hysterectomy

NCT01834027
View directory record Official record
Conditions
Pain, Anxiety
Interventions
Jazz music, No music
Behavioral
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 75 Years · Female only
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 15, 2016 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Impact of Combined Hormonal Contraceptives on UPA

NCT02577601
View directory record Official record
Conditions
Contraception
Interventions
Ulipristal Acetate, Levonorgestrel (LNG)/Ethinyl estradiol birth control pill
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 8, 2019 · Synced Oct 22, 2026, 8:06 AM EDT
Recruiting Phase 2 Interventional

Mammogram Pretreatment With Ulipristal Acetate

NCT07434128
View directory record Official record
Conditions
Mammography Screening, Breast Density
Interventions
Biospecimen Collection, Magnetic Resonance Imaging, Mammogram, Survey Administration, Ulipristal Acetate
Procedure · Other · Drug
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 22, 2026, 8:06 AM EDT
Completed No phase listed Observational

Advance Provision of Postpartum Emergency Contraception and Its Effects on Reproductive Autonomy

NCT05285605
View directory record Official record
Conditions
Contraception, Contraceptive Usage, Reproductive Issues
Interventions
Ulipristal Acetate
Drug
Lead sponsor
Northwestern University
Other
Eligibility
16 Years to 40 Years · Female only
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 27, 2025 · Synced Oct 22, 2026, 8:06 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Clinical Follow-up and Outcomes of Pregnancies Exposed to Ella

NCT01569737
View directory record Official record
Conditions
Emergency Contraception
Interventions
ella
Drug
Lead sponsor
HRA Pharma
Industry
Eligibility
18 Years and older · Female only
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 21, 2019 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

EC PK in Women With Normal and Obese BMI

NCT02689804
View directory record Official record
Conditions
Contraception
Interventions
LNG-EC, UPA-EC
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 7, 2017 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Compare Daily Ulipristal Acetate and Combined Oral Contraceptive Effects on Breast Epithelial Cell Proliferation

NCT02922127
View directory record Official record
Conditions
Contraception
Interventions
Ulipristal Acetate, Combined Oral Contraceptive Pill
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 39 Years · Female only
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 7, 2020 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of CDB-2914 in Comparison to Levonorgestrel for Emergency Contraception

NCT00551616
View directory record Official record
Conditions
Contraception
Interventions
CDB-2914, Levonorgestrel
Drug
Lead sponsor
HRA Pharma
Industry
Eligibility
16 Years and older · Female only
Enrollment
2,221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
23
States / cities
Los Angeles, California • Santa Monica, California • Boulder, Colorado + 18 more
Source: ClinicalTrials.gov public record
Updated May 3, 2022 · Synced Oct 22, 2026, 8:06 AM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Study of the Safety and Efficacy of Ulipristal Acetate (UPA) Used Daily as a Contraceptive

NCT03296098
View directory record Official record
Conditions
Contraception, Healthy Female
Interventions
Ulipristal acetate
Drug
Lead sponsor
Premier Research
Other
Eligibility
18 Years to 35 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
18
States / cities
Los Angeles, California • Sacramento, California • San Francisco, California + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate the Safety and Efficacy of Two Contraceptive Vaginal Rings Delivering a Daily Dose of 1500 or 2500 μg of CDB-2914

NCT00791297
View directory record Official record
Conditions
Contraception
Interventions
CDB-2914
Drug
Lead sponsor
Population Council
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 15, 2017 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 3 Interventional Results available

A Study of the Efficacy and Safety of Ulipristal Acetate Intermittent Treatment for Abnormal Uterine Bleeding Associated With Leiomyomas

NCT02147158
View directory record Official record
Conditions
Leiomyoma, Uterine Hemorrhage
Interventions
Ulipristal acetate (UPA), Placebo
Drug
Lead sponsor
Allergan
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
432 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
61
States / cities
Mesa, Arizona • Phoenix, Arizona • Scottsdale, Arizona + 54 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2019 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 2 Interventional

Treatment of Uterine Fibroids With CDB-2914, an Experimental Selective Progesterone Receptor Antagonist

NCT00044876
View directory record Official record
Conditions
Leiomyoma
Interventions
CDB-2914
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
33 Years to 50 Years · Female only
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effectiveness of Orally Dosed Emergency Contraception in Obese Women - UPA

NCT02859337
View directory record Official record
Conditions
Obesity, Contraception
Interventions
UPA-ECx1, UPA-ECx2
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 6, 2024 · Synced Oct 22, 2026, 8:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Efficacy Study of Two Continuous Regimens of Oral Daily 5 mg or 10 mg of Ulipristal Acetate (UPA), Versus a Dose of 5.0mg UPA for 24/4 Days

NCT01953679
View directory record Official record
Conditions
Focus: Estrogen-free Oral Contraception
Interventions
Ulipristal Acetate
Drug
Lead sponsor
Premier Research
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
10
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Feb 22, 2016 · Synced Oct 22, 2026, 8:06 AM EDT