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Showing 1–24 of 51 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Emergency Contraception Clear all
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 20, 2019 · Synced Jul 23, 2026, 1:20 PM 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 5, 2024 · Synced Jul 23, 2026, 1:20 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Increased Access to Emergency Contraceptive Pills

NCT00060463
View directory record Official record
Conditions
Pregnancy, Sexually Transmitted Diseases
Interventions
Increased access to emergency contraceptive pills
Behavioral
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
14 Years to 24 Years · Female only
Enrollment
1,490 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2005
U.S. locations
2
States / cities
Reno, Nevada • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 23, 2026, 1:20 PM EDT
Completed No phase listed Observational

Study of the Copper IUD or Oral Levonorgestrel and the Levonorgestrel IUD for Women Seeking Emergency Contraception

NCT01963962
View directory record Official record
Conditions
Emergency Contraception
Interventions
Copper IUD, Levonorgestrel IUD
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 7, 2016 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Trial of an Adolescent Male Sexual Health Intervention

NCT04969289
View directory record Official record
Conditions
Contraception Behavior
Interventions
Dr. Eric Digital Health Intervention
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
14 Years to 21 Years · Male only
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 8, 2024 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Emergency Contraception Actual Use Study

NCT00777556
View directory record Official record
Conditions
Emergency Contraception
Interventions
DR-104
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
11 Years to 16 Years · Female only
Enrollment
343 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
5
States / cities
San Francisco, California • Atlanta, Georgia • Minneapolis, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 17, 2012 · Synced Jul 23, 2026, 1:20 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Study Comparing Emergency Contraception Effectiveness in Women Who Weight ≥ 80 kg

NCT03537768
View directory record Official record
Conditions
Contraception
Interventions
Ulipristal Acetate, Levonorgestrel
Drug
Lead sponsor
Kimberly Myer
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
532 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
18
States / cities
Los Angeles, California • Sacramento, California • San Francisco, California + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 19, 2025 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Depot Medroxyprogesterone Acetate as Emergency Contraception

NCT03395756
View directory record Official record
Conditions
Emergency Contraception, Contraception
Interventions
Depot-Medroxyprogestereone Acetate
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 39 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 4, 2020 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Emergency Contraception (ECP): Reducing Unintended Pregnancies

NCT00067509
View directory record Official record
Conditions
Contraception, Pregnancy
Interventions
emergency contraception (estrogen/progesterone)
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
15 Years to 39 Years · Female only
Enrollment
1,100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2004
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Advance Supply of Emergency Contraception Compared to Routine Postpartum Care in Teens

NCT00433004
View directory record Official record
Conditions
Post Partum
Interventions
Plan B (Levonorgestrel)
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
14 Years to 19 Years · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 14, 2017 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Computer-assisted Preventive Health Education for Women of Reproductive Age in Urgent Care Settings

NCT00177515
View directory record Official record
Conditions
Preconception Care
Interventions
"video doctor," computer module
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
446 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 4, 2010 · Synced Jul 23, 2026, 1:20 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Obesity on Pharmacokinetics of the Levonorgestrel Emergency Contraceptive Pill

NCT02104609
View directory record Official record
Conditions
Obesity
Interventions
Levonorgestrel 1.5mg by mouth once
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2019 · Synced Jul 23, 2026, 1:20 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Application for the Etonogestrel/Ethinyl Estradiol Ring

NCT03120728
View directory record Official record
Conditions
Emergency Contraception, Healthy, Reproductive Age Women
Interventions
Etonogestrel/ethinyl estradiol contraceptive vaginal ring
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 39 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2017 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Not applicable Interventional

UCSF College Health Study on Contraceptive Training and Education at Community Colleges

NCT03519685
View directory record Official record
Conditions
Contraception
Interventions
Contraceptive Training and Education, Placebo Nutrition Education
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
2,086 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 14, 2025 · Synced Jul 23, 2026, 1:20 PM 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 6, 2017 · Synced Jul 23, 2026, 1:20 PM EDT
Completed No phase listed Observational

Quick Start of Highly Effective Contraception

NCT02076217
View directory record Official record
Conditions
IUD, Contraceptive Implant, Contraception, Birth Control, Emergency Contraception
Interventions
Copper T-380 IUD, LNG IUD, Contraceptive implant Nexplanon, Depo-Provera
Drug · Device
Lead sponsor
University of Utah
Other
Eligibility
15 Years to 45 Years · Female only
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
West Valley City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reducing Adolescent Pregnancy

NCT04120376
View directory record Official record
Conditions
Pregnancy in Adolescence, Counseling, Contraception Behavior
Interventions
Contraception Counseling
Behavioral
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
15 Years to 18 Years · Female only
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
2
States / cities
Kansas City, Missouri • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Jul 23, 2026, 1:20 PM 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 26, 2025 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Oral Levonorgestrel Plus Meloxicam, IG-002 Delays Ovulation in Normal Menstruating Women by Seven Days

NCT05695352
View directory record Official record
Conditions
Pregnancy Prevention
Interventions
Levonorgestrel 1.5mg, Meloxicam 15 mg, Placebo
Drug · Other
Lead sponsor
InnovaGyn, Inc.
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Contraception Initiation Feasibility in the Pediatric ED

NCT03559634
View directory record Official record
Conditions
Contraception, Contraception Behavior
Interventions
Intervention Group, Control Group
Diagnostic Test · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
15 Years to 21 Years · Female only
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 26, 2024 · Synced Jul 23, 2026, 1:20 PM 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 7, 2019 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effect of a Non-hormonal Cox-2 Inhibitor (Celebrex) on Ovulation

NCT01129245
View directory record Official record
Conditions
Ovulation, Luteal Development
Interventions
Celebrex, Placebo
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 17, 2019 · Synced Jul 23, 2026, 1:20 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Drospirenone-only Pill as Emergency Contraception

NCT05675644
View directory record Official record
Conditions
Contraception
Interventions
Drospirenone-only pill
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 8, 2023 · Synced Jul 23, 2026, 1:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reducing Adolescent Pregnancy in the Emergency Department

NCT04744155
View directory record Official record
Conditions
Contraception, Adolescent Behavior, Emergency Department
Interventions
Multi-Level Intervention, Enhanced Standard of Care
Behavioral
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
15 Years to 18 Years · Female only
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Kansas City, Missouri • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Jul 23, 2026, 1:20 PM EDT