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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Menstrual Cycles Clear all
Not listed Not applicable Interventional

A Clinical Trial to Examine the Efficacy of a Supplement to Support Hormone Regulation in Women

NCT06531668
View directory record Official record
Conditions
Hormone Regulation
Interventions
Beyond Hormone, Placebo
Dietary Supplement · Other
Lead sponsor
Scale Media Inc
Industry
Eligibility
25 Years to 45 Years · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jul 31, 2024 · Synced Sep 22, 2026, 6:54 PM EDT
Completed Not applicable Interventional

Delivering Transcutaneous Auricular Neurostimulation to Reduce Heavy Menstrual Bleeding in Patients With and Without Von Willebrand Disease

NCT06064851
View directory record Official record
Conditions
Von Willebrand Disease, Type 1, Heavy Menstrual Bleeding
Interventions
Volta System
Device
Lead sponsor
Five Liters, Inc.
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 22, 2026, 6:54 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Menstrual Phase Endometrial Scratch in IUI Cycles

NCT04641598
View directory record Official record
Conditions
Fertility Disorders, Fertility Issues
Interventions
Endometrial Scratch, Sham procedure
Procedure
Lead sponsor
Carilion Clinic
Other
Eligibility
18 Years to 37 Years · Female only
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 5, 2021 · Synced Sep 22, 2026, 6:54 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 22, 2026, 6:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Influence of Social and Environmental Factors on Women's Reproductive Function in a Maya Community of Guatemala

NCT00340782
View directory record Official record
Conditions
Early Pregnancy
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
16 Years to 42 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
2
States / cities
Ann Arbor, Michigan • Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 22, 2026, 6:54 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 Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Longitudinal Analysis of the Vaginal Microbiome

NCT05383326
View directory record Official record
Conditions
Vaginal Microbiome
Interventions
Not listed
Lead sponsor
Viome
Industry
Eligibility
18 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Dec 11, 2023 · Synced Sep 22, 2026, 6:54 PM EDT
Recruiting Not applicable Interventional

Moderate Aerobic Exercise for Managing Menstrual Cycle Symptoms

NCT07084714
View directory record Official record
Conditions
Premenstrual Syndrome, Menstrual Cycle, Menstrual Distress (Dysmenorrhea), Menstrual Bleeding, Heavy
Interventions
Moderate Aerobic Exercise
Behavioral
Lead sponsor
University of Colorado, Colorado Springs
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Colorado Springs, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Sep 22, 2026, 6:54 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Examining the Role of Female Endogenous Sex Hormones in Eccentric Exercise

NCT05934708
View directory record Official record
Conditions
Inflammatory Response
Interventions
Eccentric leg extension
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Sep 22, 2026, 6:54 PM EDT
Recruiting Not applicable Interventional

Delivering tAN to Reduce HMB: The LUNA Study

NCT07326722
View directory record Official record
Conditions
Heavy Menstrual Bleeding
Interventions
Sparrow Link, Sparrow Link (Sham)
Device
Lead sponsor
Spark Biomedical, Inc.
Industry
Eligibility
14 Years to 45 Years · Female only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational

Breast Imaging Studies in Women at High Genetic Risk of Breast Cancer: Menstrual Cycle Study

NCT00006425
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 100 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 26, 2020 · Synced Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Role of Hormones in Susceptibility to Seizures in Women With Epilepsy

NCT00044252
View directory record Official record
Conditions
Epilepsy
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 45 Years · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Nutritional and Metabolic Correlates of Ovarian Morphology in Women With Polycystic Ovary Syndrome

NCT01927471
View directory record Official record
Conditions
Polycystic Ovary Syndrome (PCOS), Menstrual Irregularity
Interventions
Not listed
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 48 Years · Female only
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2019
U.S. locations
3
States / cities
Ithaca, New York • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Sep 22, 2026, 6:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Estradiol Effects on Alcohol Across the Menstrual Cycle

NCT04595682
View directory record Official record
Conditions
Alcohol Use, Unspecified
Interventions
Placebo, Alcohol
Drug
Lead sponsor
Mark Fillmore
Other
Eligibility
21 Years to 35 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational

Correlation of Menstrual Cycle Phase at Time of Primary Surgery With 5-Year Disease-Free Survival in Women With Stage I or Stage II Breast Cancer

NCT00002762
View directory record Official record
Conditions
Breast Cancer, Perioperative/Postoperative Complications
Interventions
patient interviewing to obtain menstrual history, blood sampling
Behavioral · Procedure
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
1,118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2009
U.S. locations
52
States / cities
Mobile, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 44 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2016 · Synced Sep 22, 2026, 6:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Mixhers HERTIME Supplements on Menstrual Symptoms

NCT06136104
View directory record Official record
Conditions
Healthy, Premenstrual Dysphoric Disorder, Premenstrual Syndrome
Interventions
Mixhers HERTIME, Placebo
Dietary Supplement
Lead sponsor
Midwestern University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Glendale, Arizona
Source: ClinicalTrials.gov public record
Updated May 7, 2024 · Synced Sep 22, 2026, 6:54 PM EDT
Recruiting No phase listed Observational

Effects of Glucagon-like Peptide-1 (GLP-1) Agonist in Neuro-reproductive Function in Obese Adolescent Females With Polycystic Ovary Syndrome (PCOS)

NCT07169136
View directory record Official record
Conditions
Polycystic Ovarian Syndrome in Adolescent Females, Obesity (Disorder)
Interventions
GLP-1 Receptor Agonists
Drug
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
12 Years to 18 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Sep 22, 2026, 6:54 PM EDT
Active, not recruiting No phase listed Observational

Factors Influencing Fertility or Pregnancy Health

NCT04595760
View directory record Official record
Conditions
Menstrual Cycles, Conception, Early Pregnancy Loss, Pregnancy Outcomes
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
21 Years to 42 Years · Female only
Enrollment
231 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Monitoring Functional Variation in the Breast During Menstrual Cycle by Using Diffuse Optical Spectroscopy

NCT00540306
View directory record Official record
Conditions
Accessory; Breast Tissue
Interventions
Diffuse Optical Spectroscopy
Device
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2012
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Oct 19, 2022 · Synced Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Ultrasonographic Evaluation of Anovulatory Disorders in Lean and Overweight Women

NCT03306849
View directory record Official record
Conditions
Menstrual Cycle Abnormal, PCOS, Overweight, Obesity
Interventions
Not listed
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Sep 22, 2026, 6:54 PM EDT
Not yet recruiting Not applicable Interventional

Female Concussion Head Cooling

NCT07303933
View directory record Official record
Conditions
Concussion (Diagnosis), Concussion Post Syndrome, Concussion, Mild
Interventions
Brain Cooling
Device
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 27 Years · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Sep 22, 2026, 6:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Alternating Urine Redox Status Of Consecutive Menstrual Cycles

NCT04157309
View directory record Official record
Conditions
Pregnancy Related, Gender
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 30 Years · Female only
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 22, 2021 · Synced Sep 22, 2026, 6:54 PM EDT
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 Sep 22, 2026, 6:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Altered Calcium and Vitamin D in PMDD or Severe PMS

NCT00005119
View directory record Official record
Conditions
Premenstrual Syndrome
Interventions
Measures of calcium and bone turnover
Procedure
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 45 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2003
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 1, 2010 · Synced Sep 22, 2026, 6:54 PM EDT