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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Oral Contraceptive Pill Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Txt Now 2 Decrease Pregnancies L8r: A Study to Evaluate the Effect of Daily Text Message Reminders on Pill Continuation

NCT00677703
View directory record Official record
Conditions
Contraceptives, Oral
Interventions
Daily Text Messages
Other
Lead sponsor
Columbia University
Other
Eligibility
Up to 24 Years · Female only
Enrollment
968 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Nov 18, 2012 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Oral Contraceptives and Body Mass Index

NCT01170390
View directory record Official record
Conditions
Body Weight, Contraceptive Usage
Interventions
All participants (Aviane), Portia, Aviane
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 30, 2015 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Continuous Versus Cyclical OCP Use in PCOS

NCT03819140
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Yasmin
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
15 Years to 40 Years · Female only
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Hormone Patterns and Ovarian Follicular Activity With DR-1021

NCT00544882
View directory record Official record
Conditions
Healthy
Interventions
DR-1021, Mircette®, Kariva®
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
18 Years to 35 Years · Female only
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
4
States / cities
Lawrenceville, New Jersey • Columbus, Ohio • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 17, 2021 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Open-Label Study to Evaluate the Safety and Efficacy of a Low-Dose 28-Day Oral Contraceptive

NCT00362479
View directory record Official record
Conditions
Contraception
Interventions
DR-1021
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
1,347 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
85
States / cities
Huntsville, Alabama • Mobile, Alabama • Phoenix, Arizona + 76 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2013 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Atazanavir and Ritonavir (ATV/RTV) and an Oral Contraceptive in Healthy Females

NCT00357604
View directory record Official record
Conditions
HIV Infections
Interventions
Ortho Tri-Cyclen (ethinyl estradiol + norgestimate), Ortho Tri-Cyclen LO (ethinyl estradiol + norgestimate) + Atazanavir/Ritonavir for 14 days then Ortho Tri-Cyclen for 7 days
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 7, 2011 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

HSG and Tubal Patency Study

NCT02146248
View directory record Official record
Conditions
Tubal Patency
Interventions
combined oral contraceptive, DepoProvera
Drug
Lead sponsor
Jeffrey Jensen
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 21, 2017 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug-Drug Interaction Study of MK 8527 With a Combined Oral Contraceptive (LNG/EE)

NCT06783192
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV), HIV Pre-Exposure Prophylaxis
Interventions
MK-8527, LNG/EE
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 70 Years · Female only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
South Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 19, 2025 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 3 Interventional Results available

LCS12 vs Combined Oral Contraceptive (COC) User Satisfaction Study

NCT01254292
View directory record Official record
Conditions
Contraception
Interventions
Levonorgestrel IUD (LCS, BAY86-5028), Yasmin (EE30/DRSP, BAY86-5131)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 29 Years · Female only
Enrollment
567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
24
States / cities
Tucson, Arizona • La Mesa, California • San Diego, California + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2017 · Synced Sep 28, 2026, 7:52 PM 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 24, 2017 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 2 Interventional

Drug Interactions Between Lopinavir/Ritonavir and Oral or Patch Contraceptives in HIV Infected Women

NCT00125983
View directory record Official record
Conditions
HIV Infections, Pregnancy
Interventions
Lopinavir/ritonavir, Ortho Novum 1/35, Ortho Evra
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2007
U.S. locations
8
States / cities
Los Angeles, California • Aurora, Colorado • Honolulu, Hawaii + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Elenestinib in Healthy Adult Female Participants

NCT07388511
View directory record Official record
Conditions
Healthy Participants
Interventions
Elenestinib, Midazolam, Levonorgestrel/Ethinyl Estradiol
Drug
Lead sponsor
Blueprint Medicines Corporation
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy Of Drospirenone and Ethinyl Estradiol vs Placebo in the Treatment of Truncal Acne

NCT00722761
View directory record Official record
Conditions
Acne Vulgaris
Interventions
drospirenone and ethinyl estradiol, Placebo tablet
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 4, 2013 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Pharmacokinetic Study of Colchicine With an Oral Contraceptive

NCT01040845
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 4, 2010 · Synced Sep 28, 2026, 7:52 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Exogenous and Endogenous Risk Factors for Early-onset Colorectal Cancer

NCT05732623
View directory record Official record
Conditions
Colorectal Cancer, Early Onset Colorectal Cancer, Diet Habit, Risk Reduction
Interventions
Semi Quantitative Food Frequency Questionnaire (SQFFQ)
Behavioral
Lead sponsor
San Raffaele University
Other
Eligibility
18 Years to 49 Years
Enrollment
2,300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2035
U.S. locations
2
States / cities
Denver, Colorado • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Prune Consumption and Bone Health in Young Women Using Hormonal Contraceptives

NCT04785131
View directory record Official record
Conditions
Osteoporosis Risk
Interventions
Prune
Other
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
2
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Desogestrel-containing COCP Pharmacokinetic Validation Study

NCT05002738
View directory record Official record
Conditions
Contraception
Interventions
Desogestrel and Ethinyl Estradiol Tablets
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of Evacetrapib in Healthy Female Participants

NCT01746732
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Ortho-Cyclen, Evacetrapib
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 8, 2018 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Bleeding Patterns With Three Different Doses of DR-1031 Compared to Seasonale

NCT00394771
View directory record Official record
Conditions
Breakthrough Bleeding
Interventions
DR-1031, Seasonale®, Portia®
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
567 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
50
States / cities
Huntsville, Alabama • Tucson, Arizona • Little Rock, Arkansas + 45 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy and Safety of Two Flexible Extended Regimens of BAY86-5300 (SH T00186D) in Comparison With the Conventional Regimen of YAZ

NCT00567164
View directory record Official record
Conditions
Contraception, Ovulation Inhibition, Contraceptives, Oral
Interventions
EE20/DRSP (BAY86-5300), EE20/DRSP (YAZ, BAY86-5300)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
1,887 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
85
States / cities
Montgomery, Alabama • Chandler, Arizona • Mesa, Arizona + 74 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2014 · Synced Sep 28, 2026, 7:52 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Treatment of Menorrhagia in Women With Thrombocytopenia Using Platelets or Platelets and Hormones

NCT00556400
View directory record Official record
Conditions
Aplastic Anemia, Menorrhagia, Amenorrhea
Interventions
Lo-Ovral Oral Contraceptive Pills, Placebo - sugar pill
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
12 Years to 55 Years · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 18, 2013 · Synced Sep 28, 2026, 7:52 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

The Over The Counter Pill National Study

NCT05988983
View directory record Official record
Conditions
Contraception, Contraception Behavior, Contraceptive Usage, Health Care Utilization
Interventions
Availability of OTC contraceptive pill
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
12 Years to 51 Years · Female only
Enrollment
1,026 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated May 12, 2025 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Study to Evaluate Suppression of the Pituitary-Ovarian Axis With Three Different Oral Contraceptive Regimens

NCT00117273
View directory record Official record
Conditions
Healthy
Interventions
Seasonale [levonorgestrel (LNG)/ethinyl estradiol (EE)], Seasonique (LNG/EE and EE), Portia (LNG/EE)
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 35 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Temple, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2014 · Synced Sep 28, 2026, 7:52 PM EDT
Completed Not applicable Interventional

The Impact of Pack Supply on Birth Control Pill Continuation

NCT00677742
View directory record Official record
Conditions
Oral Contraception
Interventions
enhanced initial supply of oral contraception, conventional initial supply of oral contraception
Other
Lead sponsor
Columbia University
Other
Eligibility
Up to 35 Years · Female only
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 11, 2012 · Synced Sep 28, 2026, 7:52 PM EDT