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Showing 1–24 of 39 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Loestrin Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Assess the Pharmacokinetic Drug-Drug Interactions of Lemborexant When Coadministered With an Oral Contraceptive, Famotidine, or Fluconazole in Healthy Subjects

NCT03451110
View directory record Official record
Conditions
Healthy Subjects
Interventions
lemborexant, Loestrin, famotidine, fluconazole
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 5, 2018 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Interaction of BMS-986322 and a Combined Oral Hormonal Contraceptive (Ethinyl Estradiol [EE]/Norethindrone [NET]) in Healthy Female Participants

NCT05579574
View directory record Official record
Conditions
Healthy Participants
Interventions
BMS-986322, Loestrin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Anaheim, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2023 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Norethindrone/Ethinyl Estradiol 0.4 mg/35 Mcg Chewable Tablets Under Non-Fasted Conditions

NCT01344369
View directory record Official record
Conditions
Healthy
Interventions
Norethindrone/Ethinyl Estradiol, FEMCON® Fe
Drug
Lead sponsor
Teva Pharmaceuticals USA
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 29, 2011 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of BMS-986165 Combined With an Oral Contraceptive (Ethinyl Estradiol/Norethindrone) in Healthy Female Patients

NCT03262727
View directory record Official record
Conditions
Systemic Lupus Erythematosus, Arthritic Psoriasis, Psoriasis, Inflammatory Bowel Diseases
Interventions
BMS-986165, Loestrin 1.5/30 (1.5 mg norethindrone acetate/30 μg ethinyl estradiol)
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 18, 2020 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 3 Interventional

Safety of Estrogens in Lupus: Birth Control Pills

NCT00000420
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
Ortho-Novum 777
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 39 Years · Female only
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2003
U.S. locations
15
States / cities
Los Angeles, California • Chicago, Illinois • Shreveport, Louisiana + 11 more
Source: ClinicalTrials.gov public record
Updated May 2, 2013 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of BMS-986195 Combined With an Oral Contraceptive (Ethinyl Estradiol/Norethindrone) in Healthy Female Patients

NCT03262740
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
BMS-986195, Loestrin 1.5/30 (1.5 mg norethindrone acetate/30 μg ethinyl estradiol)
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
2
States / cities
South Miami, Florida • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 19, 2020 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluate the Effect of VI-0521 on the Pharmacokinetics of Oral Contraceptive in Healthy Female Subjects

NCT00821496
View directory record Official record
Conditions
Healthy
Interventions
ethinyl estradiol, norethindrone, VI-0521
Drug
Lead sponsor
VIVUS LLC
Industry
Eligibility
19 Years to 64 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 1, 2009 · Synced Sep 1, 2026, 1:42 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 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

An Evaluation of the Pharmacokinetics of an Oral Contraceptive (Brevicon) When Co-administered With Albiglutide .

NCT01077505
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
albiglutide, Oral contraceptive (Brevicon)
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Sep 1, 2026, 1:42 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 1, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Oral Contraceptive (OC) Estrogen Dose and Breast Proliferation

NCT01318005
View directory record Official record
Conditions
Oral Contraceptive
Interventions
Oral Contraceptive: Ortho-Novum® 1/35, Oral Contraceptive: Ovcon® 35, Oral Contraceptive: Microgestin Fe® 1/20
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Safety and Efficacy of an Oral Contraceptive

NCT00477633
View directory record Official record
Conditions
Contraception
Interventions
Norethindrone/ethinyl estradiol
Drug
Lead sponsor
Warner Chilcott
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
1,700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
63
States / cities
Chandler, Arizona • Phoenix, Arizona • Tempe, Arizona + 53 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2013 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Oral Contraceptive (OC) Progestin Dose and Breast Proliferation

NCT00972439
View directory record Official record
Conditions
Oral Contraceptive
Interventions
Oral Contraceptive: Ortho-Novum® 1/35, Oral Contraceptive: Ovcon Fe®
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 34 Years · Female only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 22, 2018 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effects of Different Methods of Birth Control on the Drug Actions of Zidovudine (an Anti-HIV Drug) in HIV-Positive Women and to Compare Zidovudine Metabolism in Men and Women

NCT00000897
View directory record Official record
Conditions
HIV Infections
Interventions
Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
6
States / cities
San Francisco, California • Jacksonville, Florida • Albany, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2011 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Potential Drug-Drug Interaction Between VH4524184 and Oral Contraceptive (Loestrin) in Healthy Adult Female Participants

NCT06310616
View directory record Official record
Conditions
HIV Infections
Interventions
VH4524184, Loestrin
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study of Loestrin 24(24 Days of "Real" Pills) Fe Versus Loestrin 1/20 (21 "Real" Pills)

NCT00475189
View directory record Official record
Conditions
Pelvic Pain, Headaches, Emotional
Interventions
loestrin 24/4 vs loestrin 1/20, loestrin 1/20
Drug
Lead sponsor
Scott and White Hospital & Clinic
Other
Eligibility
18 Years to 48 Years · Female only
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Temple, Texas
Source: ClinicalTrials.gov public record
Updated Jul 24, 2011 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Early Phase 1 Interventional

Gender Disparity and Hormones in Cystic Fibrosis

NCT02036879
View directory record Official record
Conditions
Cystic Fibrosis (CF)
Interventions
Loestrin (norethindrone acetate and ethinyl estradiol)
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
2
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 30, 2020 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug-drug Interaction Study Between BMS-663068 and Oral Contraceptives in Healthy Female Volunteers (DDI)

NCT02480881
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
BMS-663068, Oral Contraceptive, Loestrin 1.5/30
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
2
States / cities
Miami, Florida • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 26, 2017 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of the Effects of GSK189075 on PK Profiles of an Oral Contraceptive Pill When Given to Healthy Female Volunteers

NCT00504816
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Diabetes Mellitus, Type 2
Interventions
GSK189075, Brevicon
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Miramar, Florida
Source: ClinicalTrials.gov public record
Updated Jun 3, 2012 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of VX-407 on the Pharmacokinetics of Oral Contraceptives in Healthy Participants

NCT07074327
View directory record Official record
Conditions
Autosomal Dominant Polycystic Kidney Disease (ADPKD)
Interventions
VX-407, LNG/EE, NGM/EE, NET/EE, DRSP/EE
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug Interaction Study of Danicopan

NCT04709094
View directory record Official record
Conditions
Healthy
Interventions
Danicopan, Warfarin, Bupropion, Ethinyl Estradiol/Norethindrone
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 13, 2021 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Drug-drug Interaction of BMS-986196 With Oral Contraceptives in Healthy Female Participants

NCT05891262
View directory record Official record
Conditions
Healthy Female Volunteers
Interventions
BMS-986196, Loestrin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Sep 24, 2023 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Safety and Efficacy of an Oral Contraceptive

NCT00391807
View directory record Official record
Conditions
Contraception
Interventions
Norethindrone acetate/ethinyl estradiol
Drug
Lead sponsor
Warner Chilcott
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
1,683 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
66
States / cities
Phoenix, Arizona • Tempe, Arizona • Tucson, Arizona + 52 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2013 · Synced Sep 1, 2026, 1:42 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Ovulation Incidence in Oral Contraceptive Users

NCT03106454
View directory record Official record
Conditions
Contraception, Ovulation
Interventions
Ethinyl Estradiol, Norethindrone acetate, ferrous fumarate, Norethindrone
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Sep 1, 2026, 1:42 PM EDT