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Showing 1–24 of 272 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Menstrual Cycle Disorder Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effect of a Commonly Used Antibiotic, Doxycycline, in Women With Polycystic Ovarian Syndrome

NCT01788215
View directory record Official record
Conditions
Polycystic Ovarian Syndrome (PCOS), Irregular Menstrual Cycles, Androgen Excess
Interventions
doxycycline, Sugar Pill
Drug · Other
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 12, 2016 · Synced Jul 23, 2026, 8:59 PM EDT
Recruiting Not applicable Interventional

Transcutaneous Auricular Neurostimulation (tAN) for Premenstrual Dysphoric Disorder (PMDD) and Perimenopause

NCT07688720
View directory record Official record
Conditions
Perimenopause, PMDD
Interventions
transcutaneous auricular neurostimulation (tAN)
Device
Lead sponsor
Texas Christian University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Jul 23, 2026, 8:59 PM EDT
Not listed Not applicable Interventional

Baselines in Reproductive Disorders

NCT00456274
View directory record Official record
Conditions
Amenorrhea, Hypogonadotropic Hypogonadism, Kallmann's Syndrome
Interventions
Frequent baseline blood sampling
Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 45 Years · Female only
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 3, 2014 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational

Ovarian Follicle Function in Patients With Primary Ovarian Failure

NCT00001275
View directory record Official record
Conditions
Amenorrhea, Hypoaldosteronism, Hypogonadism, Infertility, Premature Ovarian Failure
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 42 Years · Female only
Enrollment
1,134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1991 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 5, 2017 · Synced Jul 23, 2026, 8:59 PM EDT
Completed Phase 3 Interventional Results available

A Clinical Study to Evaluate the Safety and Efficacy of Elagolix in Participants With Moderate to Severe Endometriosis-Associated Pain

NCT03213457
View directory record Official record
Conditions
Endometriosis
Interventions
Estradiol/Norethindrone Acetate, Placebo for Elagolix, Elagolix, Placebo for E2/NETA
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
681 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
188
States / cities
Birmingham, Alabama • Fairhope, Alabama • Mobile, Alabama + 140 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational

Glycemic Profiles And Insulin Delivery Across The Menstrual Cycle In Women With Type 1 Diabetes

NCT04665999
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Continuous Glucose Monitor
Device
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Jul 23, 2026, 8:59 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 Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational

Adrenal Hyperplasia Among Young People With PCOS

NCT01313455
View directory record Official record
Conditions
Adrenal Hyperplasia, Polycystic Ovarian Syndrome, Oligomenorrhea, Obesity, Hyperandrogenism
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
16 Years to 29 Years · Female only
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 30, 2019 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Ultrasound Appearance of the Endometrium Post Radio-Frequency Ablation

NCT02584088
View directory record Official record
Conditions
Menorrhagia
Interventions
Ultrasound
Other
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years and older · Female only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
2
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 1, 2022 · Synced Jul 23, 2026, 8:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effera Dose Response: Women's Health

NCT07524270
View directory record Official record
Conditions
Womens Health, Menstrual Symptoms
Interventions
Effera® (human equivalent lactoferrin), Placebo
Dietary Supplement · Other
Lead sponsor
Helaina Inc.
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Jul 23, 2026, 8:59 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

The Use of Pycnogenol® to Alleviate Menopausal Symptoms Induced or Increased by Breast and Gynecological Cancer Treatments

NCT03704454
View directory record Official record
Conditions
Climacteric; Menorrhagia, Menopausal, Menopause
Interventions
50 mg PYC and then placebo, 100 mg PYC and then placebo, Placebo and then 50 mg PYC, Placebo and then 100 mg PYC
Dietary Supplement
Lead sponsor
Legacy Health System
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
3
States / cities
Gresham, Oregon • Portland, Oregon • Tualatin, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 11, 2018 · Synced Jul 23, 2026, 8:59 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Tamoxifen to Reduce Unscheduled Bleeding in New Users of the Levonorgestrel-releasing Intrauterine System (LNG-IUS)

NCT02824224
View directory record Official record
Conditions
Menorrhagia, Metrorrhagia, Medicated Intrauterine Devices
Interventions
Tamoxifen, Placebo (for Tamoxifen)
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
15 Years to 45 Years · Female only
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 3, 2019 · Synced Jul 23, 2026, 8:59 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Safety and Efficacy of Recombinant Human Prolactin

NCT00438490
View directory record Official record
Conditions
Healthy
Interventions
Recombinant Human Prolactin
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 2, 2018 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

KYleena Satisfaction Study / Observational Study on User Satisfaction With the Levonorgestrel Intrauterine Delivery System Kyleena (LNG-IUS 12) in New Contraceptive Users and After Switching From Another Contraceptive Method

NCT03182140
View directory record Official record
Conditions
Contraception
Interventions
Kyleena
Drug
Lead sponsor
Bayer
Industry
Eligibility
Female only
Enrollment
1,134 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
12
States / cities
Lakewood, Colorado • Sarasota, Florida • Wellington, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2021 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Reproductive Function and Mood in Women With Bipolar Disorder

NCT00183352
View directory record Official record
Conditions
Bipolar Disorder, Mental Health
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 15, 2014 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational

Stellate Ganglion Block to Treat Long COVID 19 Case Series

NCT05812209
View directory record Official record
Conditions
Long COVID, Long Covid19, Post-COVID-19 Syndrome, Post Acute COVID-19 Syndrome, Dysautonomia, Anosmia, Dysgeusia, Brain Fog, Muscle Pain, Shortness of Breath, Dizziness, Fatigue Post Viral, Cough, Menstrual Cycle Abnormal, Pain
Interventions
Stellate Ganglion Block
Procedure
Lead sponsor
Metamorphosis LTD
Other
Eligibility
Not listed
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Cañon City, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Jul 23, 2026, 8:59 PM EDT
Recruiting No phase listed Observational

Observation of Environment and Reproductive-Endocrine Effects

NCT06280807
View directory record Official record
Conditions
Hypogonadism, Hypergonadism, Precocious Puberty, Late Puberty, Amenorrhea
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
8 Years to 99 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2039
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Ultrasound Characterization of Ovarian Follicle Dynamics in Women With Amenorrhea

NCT01927432
View directory record Official record
Conditions
Oligomenorrhea, Amenorrhea, Polycystic Ovary Syndrome (PCOS)
Interventions
Not listed
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2021
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Jul 23, 2026, 8:59 PM EDT
Completed Phase 4 Interventional Results available

Tranexamic Acid in Adolescents With Heavy Menstrual Bleeding

NCT01846507
View directory record Official record
Conditions
Heavy Menstrual Bleeding
Interventions
Tranexamic Acid
Drug
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
10 Years to 19 Years · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
5
States / cities
Indianapolis, Indiana • Kansas City, Missouri • Akron, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2018 · Synced Jul 23, 2026, 8:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Study to Evaluate the Efficacy of Elix's Cycle Balance and Its Impact on PMS and Menstrual Symptoms

NCT05145257
View directory record Official record
Conditions
PMS, Menstrual Pain
Interventions
Elix Cycle Balance
Dietary Supplement
Lead sponsor
Zenchi, Inc.
Industry
Eligibility
18 Years to 36 Years · Female only
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Dec 31, 2024 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational

Hormonal Influences on Inflammatory Bowel Diseases

NCT05610527
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Contraception, Menstrual Problem
Interventions
Proposed study design and randomization scenarios, Repeated measures of validated Inflammatory Bowel Disease Patient Reported Outcome Instruments, Inflammatory marker collection and assessment for correlation with PRO responses and menstrual timing
Other
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Jul 23, 2026, 8:59 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Changes in Bleeding and Clotting During the Menstrual Cycle

NCT00480545
View directory record Official record
Conditions
Von Willebrand's Disorder, Healthy
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 50 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 4, 2014 · Synced Jul 23, 2026, 8:59 PM EDT
Completed No phase listed Observational Results available

Development of an Advisory System for Glycemic Control During the Menstrual Cycle in Patient With Type 1 Diabetes

NCT01653210
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Not listed
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 7, 2020 · Synced Jul 23, 2026, 8:59 PM EDT
Terminated Phase 3 Interventional Results available

Minimize Menorrhagia in Women With Von Willebrand Disease

NCT02606045
View directory record Official record
Conditions
Von Willebrand Diseases
Interventions
recombinant von Willebrand factor, tranexamic acid
Drug
Lead sponsor
Margaret Ragni
Other
Eligibility
13 Years to 45 Years · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
19
States / cities
Gilbert, Arizona • Orange, California • San Francisco, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2024 · Synced Jul 23, 2026, 8:59 PM EDT