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

Hormonal Birth Control and the Risk of Acquiring HIV

NCT00006324
View directory record Official record
Conditions
HIV Infections
Interventions
Ethinyl estradiol/levonorgestrel, Medroxyprogesterone acetate
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
16 Years to 35 Years · Female only
Enrollment
6,360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2002
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 6, 2008 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Efficacy and Safety of DR-103 for the Prevention of Pregnancy

NCT00996580
View directory record Official record
Conditions
Pregnancy Prevention
Interventions
DR-103
Drug
Lead sponsor
Teva Women's Health
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
3,597 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
94
States / cities
Montgomery, Alabama • Phoenix, Arizona • Tucson, Arizona + 83 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Efficacy of Seasonique for the Treatment of Cyclic Pelvic Pain

NCT00196313
View directory record Official record
Conditions
Dysmenorrhea
Interventions
levonorgestrel/EE 0.15/0.03 and EE 0.01 mg tablets, Placebo tablet
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
Up to 17 Years · Female only
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
13
States / cities
Denver, Colorado • Decatur, Georgia • Louisville, Kentucky + 10 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2016 · Synced Sep 2, 2026, 9:06 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Contraceptive Hormone and Reward Measurement (CHARM Study)

NCT05058872
View directory record Official record
Conditions
Oral Hormonal Contraceptive Use, Neural Activity, Mood, Hedonic Function
Interventions
Levonorgestrel/ethinyl estradiol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older · Female only
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 3, 2024 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effect on Primary Dysmenorrhea

NCT00909857
View directory record Official record
Conditions
Primary Dysmenorrhea
Interventions
Estradiol valerate, Dienogest (Natazia, Qlaira, BAY86-5027), Ethinyl estradiol, Levonorgestrel (Miranova), Placebo Match to SH T00658ID, Placebo Match to SH D593B
Drug
Lead sponsor
Bayer
Industry
Eligibility
14 Years to 50 Years · Female only
Enrollment
507 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
10
States / cities
Tucson, Arizona • San Diego, California • Hialeah, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2015 · Synced Sep 2, 2026, 9:06 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 2, 2026, 9:06 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 2, 2026, 9:06 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 2, 2026, 9:06 PM EDT
Recruiting Phase 2 Interventional

Role of Estrogen on Skeletal Outcomes in FHA

NCT07010146
View directory record Official record
Conditions
Bone Strength, Bone Density, FHA (Functional Hypothalamic Amenorrhea)
Interventions
transdermal 17β-E2 with cyclic progestin, oral 17β-E2 with cyclic progestin, transdermal EE+LNG
Drug
Lead sponsor
University of Virginia
Other
Eligibility
14 Years to 30 Years · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
2
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

US Cycle Control and Blood Pressure Study

NCT00920985
View directory record Official record
Conditions
Contraception
Interventions
Gestodene/EE (FC Patch Low, BAY86-5016), Oral contraceptive (equivalent to the active treatment tablets of Levlite), 21-day blister SH D00593A
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
346 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
28
States / cities
Chandler, Arizona • Glendale, Arizona • Phoenix, Arizona + 25 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2015 · Synced Sep 2, 2026, 9:06 PM 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 6, 2020 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug Drug Interaction Study Between PF-06826647 And Oral Contraceptive Steroids In Healthy Female Participants

NCT04134715
View directory record Official record
Conditions
Healthy
Interventions
PF-06826647, Oral Contraceptive (OC)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 60 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
2
States / cities
Coral Gables, Florida • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug-drug Interaction Study of CTP-543 and Oral Contraceptives in Healthy Female Subjects

NCT04309643
View directory record Official record
Conditions
Healthy Volunteers
Interventions
CTP-543, Combined oral contraceptive containing Ethinyl estradiol (EE) and Levonorgestrel (LNG)
Drug
Lead sponsor
Concert Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 15, 2020 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 2 Interventional Results available

A Multicenter Study to Evaluate the Efficacy of a 91-Day Extended Cycle Oral Contraceptive for Menstrually-Related Migraine Headaches

NCT00781456
View directory record Official record
Conditions
Migraine
Interventions
91-day Levonorgestrel Oral Contraceptive, Placebo
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 34 Years · Female only
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
22
States / cities
La Mesa, California • San Diego, California • San Francisco, California + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2017 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Assess the Safety, Tolerability, PK, ECG Effects, Food Effect, and Drug-drug Interaction (DDI) of Hormonal Contraceptives of PTI-428 in Healthy Female Volunteers

NCT02846142
View directory record Official record
Conditions
Healthy Volunteer
Interventions
PTI-428, Placebo, ethinyl estradiol and levonorgestrel
Drug · Other
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated May 23, 2018 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess CYP3A4 Modulator, Oral Contraceptive, and pH Modifier Drug Interactions for ABI-H2158 in Healthy Adults

NCT04142762
View directory record Official record
Conditions
Chronic Hepatitis B
Interventions
ABI-H2158, Itraconazole, Rifampin, Midazolam, Ethinyl Estradiol / Levonorgestrel, Esomeprazole, Placebo matching oral contraceptive
Drug
Lead sponsor
Assembly Biosciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 3 Interventional

Study Evaluating Combination of Levonorgestrel (LNG) and Ethinyl Estradiol (EE) in Premenstrual Dysphoric Disorder

NCT00128934
View directory record Official record
Conditions
Menstruation Disturbances, Premenstrual Syndrome
Interventions
levonorgestrel/ethinyl estradiol
Drug
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
744 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
69
States / cities
Scottsdale, Arizona • Tucson, Arizona • Jonesboro, Arkansas + 61 more
Source: ClinicalTrials.gov public record
Updated Dec 26, 2007 · Synced Sep 2, 2026, 9:06 PM EDT
Completed No phase listed Observational Results available

Oral Contraceptive Hormone-free Interval Pituitary/ Ovarian Activity

NCT01953211
View directory record Official record
Conditions
Hypothalamic-pituitary-ovarian Axis, Gonadotropins, Ethinyl Estradiol, Contraceptive Efficacy
Interventions
combined oral contraceptives
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
64 participants
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 25, 2019 · Synced Sep 2, 2026, 9:06 PM EDT
Withdrawn Phase 4 Interventional

Changes in Oral Contraceptive Hormones After Gastric Bypass Surgery

NCT01941134
View directory record Official record
Conditions
Bariatric Surgery Candidate, Contraception
Interventions
ethinyl estradiol-levonorgestrel
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 40 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 20, 2018 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Ovarian Follicular Activity and Hormone Levels for DR-102 Compared to Two 28-Day Oral Contraceptives

NCT01291004
View directory record Official record
Conditions
Follicle Development, Ovarian Follicle, Follicle Count, Follicle Size, Oral Contraceptive
Interventions
Desogestrel/ethinyl estradiol and ethinyl estradiol, 28-day drospirenone oral contraceptive, 28-day levonorgestrel oral contraceptive
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
18 Years to 35 Years · Female only
Enrollment
206 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 7, 2021 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Open-label Study to Evaluate the Efficacy and Safety of an Extended-cycle, Low Dose Combination Oral Contraceptive

NCT00196326
View directory record Official record
Conditions
Contraception
Interventions
DR-1011
Drug
Lead sponsor
Duramed Research
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
2,235 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
55
States / cities
Huntsville, Alabama • Phoenix, Arizona • Tucson, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated Nov 15, 2016 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Impact of Multiple Doses of Itraconazole on AZD5004 in Healthy Participants and Multiple Doses of AZD5004 on Combined Oral Ethinyl Oestradiol and Levonorgestrel in Healthy Female Participants

NCT06942936
View directory record Official record
Conditions
Healthy Participants
Interventions
AZD5004, Itraconazole, EE/LNG
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 70 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Relationship Between the Menstrual Cycle and Heart Disease in Women

NCT01546454
View directory record Official record
Conditions
Coronary Heart Disease
Interventions
Ethinyl Estradiol-Levonorgestrel combination, leuprolide acetate, Estradiol, Progesterone
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 21, 2017 · Synced Sep 2, 2026, 9:06 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Contraceptive Efficacy/Safety of a Low Dose EE/LNG Transdermal Contraceptive Delivery System

NCT01181479
View directory record Official record
Conditions
Contraception
Interventions
AG200-15 (cycles 1-13), Lessina crossover to AG200-15
Drug
Lead sponsor
Agile Therapeutics
Industry
Eligibility
17 Years to 40 Years · Female only
Enrollment
1,504 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
80
States / cities
Huntsville, Alabama • Mobile, Alabama • Chandler, Arizona + 77 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2018 · Synced Sep 2, 2026, 9:06 PM EDT