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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 Clear all
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Vitamin B6 Effects for Women Taking Birth Control Pills

NCT01128244
View directory record Official record
Conditions
Vitamin B6 Deficiency
Interventions
Vitamin B6, Infusion of labeled serine, methionine and leucine
Dietary Supplement · Procedure
Lead sponsor
University of Florida
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 6, 2017 · Synced Sep 28, 2026, 12:29 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Impact of Metformin in Teens With Polycystic Ovary Syndrome (PCOS) on Oral Contraceptive Therapy

NCT00283816
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Metformin, Oral Contraceptive Pill, Lifestyle Management Program, Quality of Life Questionnaire, Oral Glucose Tolerance Test, Blood work, Abdominal Ultra Sound, Dual-energy x-ray absorptiometry (DEXA scan), placebo
Drug · Behavioral · Procedure
Lead sponsor
University of Rochester
Other
Eligibility
12 Years to 18 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 14, 2015 · Synced Sep 28, 2026, 12:29 PM EDT
Completed Not applicable Interventional

Treatment of Non-Gestational Acute Uterine Bleeding: A Randomized Trial

NCT00350480
View directory record Official record
Conditions
Uterine Hemorrhage, Menorrhagia
Interventions
Provera, Combination Birth Control pills
Drug
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2015 · Synced Sep 28, 2026, 12:29 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Effect of Topiramate on Etonogestrel Concentrations in Contraceptive Implant Users

NCT03335163
View directory record Official record
Conditions
Migraine, Migraine;Menstrual, Contraception
Interventions
Topiramate
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 12, 2022 · Synced Sep 28, 2026, 12:29 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

To Compare SH T00658ID Over Ortho Tri-Cyclen Lo (US/Canada)

NCT00754065
View directory record Official record
Conditions
Contraception
Interventions
Estradiol valerate, Dienogest (Natazia, Qlaira, BAY86-5027), Ortho Tri Cyclen Lo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
409 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
34
States / cities
Independence, Arizona • Phoenix, Arizona • Encinitas, California + 29 more
Source: ClinicalTrials.gov public record
Updated Nov 19, 2024 · Synced Sep 28, 2026, 12:29 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Pharmacokinetics and Pharmacodynamics of the Etonogestrel Contraceptive Implant When Co-administered With Efavirenz

NCT01980342
View directory record Official record
Conditions
Drug Interaction
Interventions
Efavirenz
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 10, 2018 · Synced Sep 28, 2026, 12:29 PM EDT
Not listed No phase listed Observational

Overall and Disease Specific Survival in Patients With Confirmed MEN1 With or Without PNET (Pancreatic Neuroendocrine Tumors)

NCT03043508
View directory record Official record
Conditions
Genetic Mutation, MEN1
Interventions
Chart Review, Questionnaire
Other · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2019 · Synced Sep 28, 2026, 12:29 PM EDT
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, 12:29 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, 12:29 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, 12:29 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, 12:29 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, 12:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Home-based Delivery of the Contraceptive Implant in Postpartum Guatemalan Women

NCT04005391
View directory record Official record
Conditions
Postpartum
Interventions
Offer of Participant's Choice of Contraception Method
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
15 Years to 35 Years · Female only
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Sep 28, 2026, 12:29 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, 12:29 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, 12:29 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, 12:29 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, 12:29 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, 12:29 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, 12:29 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, 12:29 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Pilot Study to Identify Biomarkers Associated With Chronic Traumatic Brain Injury

NCT01171131
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Blood/saliva sampling
Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 70 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Sep 28, 2026, 12:29 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, 12:29 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, 12:29 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, 12:29 PM EDT