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Showing 1–24 of 205 matching trials from the live ClinicalTrials.gov search.
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Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Melatonin and Vitamin C on COVID-19

NCT04530539
View directory record Official record
Conditions
Covid19, SARS-CoV Infection
Interventions
Vitamin C, melatonin, Placebo, Symptom Survey
Dietary Supplement · Other
Lead sponsor
Lancaster General Hospital
Other
Eligibility
50 Years and older
Enrollment
122 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 16, 2022 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Individually Tailored Lighting System to Improve Sleep in Older Adults

NCT01855126
View directory record Official record
Conditions
Sleep Disturbances
Interventions
Blue light, Red light
Other
Lead sponsor
Rensselaer Polytechnic Institute
Other
Eligibility
65 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Troy, New York
Source: ClinicalTrials.gov public record
Updated Jan 28, 2019 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Phase 3 Interventional

Premedication With Melatonin in Lumbar Medial Branch Block Procedure

NCT02415309
View directory record Official record
Conditions
Anxiety
Interventions
2 mg Melatonin, 10mg Melatonin, Placebo
Drug · Other
Lead sponsor
United States Naval Medical Center, San Diego
Federal
Eligibility
18 Years to 50 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
2
States / cities
San Diego, California • Portsmouth, Virginia
Source: ClinicalTrials.gov public record
Updated May 13, 2024 · Synced Sep 20, 2026, 2:01 AM EDT
Withdrawn Not applicable Interventional

Melatonin in Acute Stroke

NCT03843008
View directory record Official record
Conditions
Stroke, Acute, Ischemic Stroke
Interventions
Melatonin
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 25, 2024 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Seeing the World Through Assorted Glasses

NCT02483559
View directory record Official record
Conditions
Sleep
Interventions
Amber Lenses, Placebo Lenses
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 7, 2017 · Synced Sep 20, 2026, 2:01 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Uterine Contractions Under Blue Light

NCT03691740
View directory record Official record
Conditions
Preterm Contractions
Interventions
Ocular light
Device
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 1, 2018 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pharmacotherapy and Mechanisms of Sleep Disturbance in Alcohol Dependence

NCT01014533
View directory record Official record
Conditions
Alcohol Dependence, Insomnia
Interventions
Placebo dispensed to subject., Gabapentin dispensed to subject.
Drug
Lead sponsor
Dr. Kirk Brower
Other
Eligibility
18 Years to 65 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 5, 2017 · Synced Sep 20, 2026, 2:01 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Acute Concussion and Melatonin

NCT04731974
View directory record Official record
Conditions
Concussion, Mild, Concussion, Brain, Pediatric ALL
Interventions
Melatonin 3 MG, Placebo
Drug · Other
Lead sponsor
Children's National Research Institute
Other
Eligibility
12 Years to 18 Years
Enrollment
254 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 6, 2024 · Synced Sep 20, 2026, 2:01 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

The Effects of Acute Melatonin Supplementation on Cardiovascular Responses to Sympathetic Activation

NCT04831398
View directory record Official record
Conditions
Healthy
Interventions
melatonin, Placebo
Dietary Supplement · Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 35 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Norman, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Commercial "Sleep Lotion" on Salivary Melatonin Levels and Sleep Quality in Undergraduates

NCT06053385
View directory record Official record
Conditions
Sleep
Interventions
Melatonin sleep lotion, Placebo control lotion
Other
Lead sponsor
University of Redlands
Other
Eligibility
18 Years to 24 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Redlands, California
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Sep 20, 2026, 2:01 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Effect of Melatonin on Sleep Patterns of Resident Trainees During Night Float Shift

NCT05701969
View directory record Official record
Conditions
Sleep Disorders, Circadian Rhythm
Interventions
Melatonin, Placebo
Dietary Supplement · Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 20, 2026, 2:01 AM EDT
Terminated Phase 2 Interventional Results available

A Study of a Melatonin Receptor Agonist to Prevent Migraine

NCT00739024
View directory record Official record
Conditions
Migraine, Migraine With Aura, Migraine Without Aura
Interventions
Ramelteon, Placebo
Drug
Lead sponsor
Swedish Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 22, 2012 · Synced Sep 20, 2026, 2:01 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Treatment of Orthostatic Intolerance

NCT00262470
View directory record Official record
Conditions
Tachycardia, Chronic Orthostatic Intolerance
Interventions
Acetazolamide, Atomoxetine, NO Drug, Clonidine, Entacapone, Entacapone & Propranolol, Atomoxetine & Propranolol, Indomethacin, Mecamylamine, Isosorbide Dinitrate, Melatonin, Midodrine, Modafinil, Octreotide, Placebo, Propranolol, Modafinil & Propranolol, Sertraline, IV Saline, Drinking Water, Breathing Device, memantine, Abdominal binder
Drug · Other · Dietary Supplement + 3 more
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional

Melatonin in Pediatric FD Population

NCT04684199
View directory record Official record
Conditions
Dyspepsia
Interventions
Melatonin, Placebo
Dietary Supplement
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
8 Years to 17 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 23, 2020 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Role of the Circadian System in Binge Eating Disorder

NCT04724668
View directory record Official record
Conditions
Binge-Eating Disorder, Circadian Rhythm Disorders
Interventions
Melatonin (3hrs before DLMO), Placebo (3hrs before DLMO), Morning light version 1, Morning light version 2
Dietary Supplement · Device
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 50 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Mason, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 20, 2026, 2:01 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Exploratory Study of Melatonin Induced Sleep Regularization in Severe Brain Injury

NCT02732288
View directory record Official record
Conditions
Disorders of Consciousness
Interventions
melatonin
Dietary Supplement
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 65 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 29, 2023 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Exploratory Investigation of a Supplement to Enhance Sleep Quality and Quantity

NCT05521243
View directory record Official record
Conditions
Sleep, Sleep Disturbance, Sleep Hygiene
Interventions
Beam Organics Dream Powder, Beam Organics Dream Powder Extra Strength, Placebo
Dietary Supplement
Lead sponsor
Beam
Industry
Eligibility
24 Years to 50 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Sep 20, 2026, 2:01 AM EDT
Terminated Phase 1 Interventional Results available

Melatonin Postoperative Sleep Study in Breast Cancer Patients

NCT00506064
View directory record Official record
Conditions
Breast Cancer
Interventions
Melatonin, Placebo, Questionnaire
Drug · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
40 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 4, 2012 · Synced Sep 20, 2026, 2:01 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Melatonin Studies of Totally Blind Children

NCT00795236
View directory record Official record
Conditions
Sleep Disorder, Blindness
Interventions
Melatonin
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
5 Years to 20 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Sep 20, 2026, 2:01 AM EDT
Recruiting Phase 2 Interventional

Sleep, Diabetic Retinopathy and Melatonin

NCT04547439
View directory record Official record
Conditions
Diabetes Mellitus, Diabetic Retinopathy
Interventions
Melatonin, Placebo
Drug · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
40 Years to 65 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Sep 20, 2026, 2:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Human Circadian Sensitivity to Very Short Light Pulses

NCT01330992
View directory record Official record
Conditions
Circadian Rhythm Disorders
Interventions
Ocular light or darkness exposure
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 30 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 22, 2011 · Synced Sep 20, 2026, 2:01 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Effect of a Daily Magnesium and Melatonin Supplement on Sleep Quality in People With Nighttime Leg Cramps

NCT07651514
View directory record Official record
Conditions
Poor Sleep Quality, Leg Cramps, Nocturnal
Interventions
Magnesium and melatonin based multi-ingredient dietary supplementation, Placebo
Dietary Supplement · Other
Lead sponsor
StudySetGo
Network
Eligibility
40 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Palm Beach Gardens, Florida
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Sep 20, 2026, 2:01 AM EDT
Terminated Not applicable Interventional Results available

Blind Child Melatonin Treatment Study

NCT00691444
View directory record Official record
Conditions
Blindness
Interventions
Melatonin, Melatonin
Dietary Supplement · Biological
Lead sponsor
Oregon Health and Science University
Other
Eligibility
5 Years to 20 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2015
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Sep 20, 2026, 2:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Season on Melatonin Secretion in Healthy Men and Women and Patients With Seasonal Affective Disorder

NCT00001485
View directory record Official record
Conditions
Seasonal Affective Disorder
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 20, 2026, 2:01 AM EDT