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ClinicalTrials.gov public records Last synced Oct 23, 2026, 3:18 PM EDT

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Showing 1–24 of 65 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Multivitamin placebo Clear all
Completed Phase 1Phase 2 Interventional Results available

Vitamin D HIV Study on Postmenopausal Women

NCT01375010
View directory record Official record
Conditions
HIV
Interventions
Vitamin D3, Placebo, Vitamin Supplements
Drug · Other
Lead sponsor
Columbia University
Other
Eligibility
40 Years to 70 Years · Female only
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 7, 2019 · Synced Oct 23, 2026, 3:18 PM EDT
Terminated Not applicable Interventional

The Pittsburgh Vitamin D Study: Vitamin D Supplementation in Vitamin D-deficient Subjects at Risk of Lung Cancer

NCT02532062
View directory record Official record
Conditions
Deficiency of Vitamin D3, COPD
Interventions
Cholecalciferol, multivitamin, Placebo
Dietary Supplement
Lead sponsor
University of Pittsburgh
Other
Eligibility
50 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 26, 2018 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 4 Interventional

Use of Empagliflozin to Treat Prediabetes

NCT05426525
View directory record Official record
Conditions
PreDiabetes, Prediabetic State, Overweight and Obesity
Interventions
Empagliflozin, Multivitamin-Placebo
Drug
Lead sponsor
Oregon State University
Other
Eligibility
18 Years to 59 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Corvallis, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 3 Interventional

Prevention of Recurrent Aphthous Stomatitis Using Vitamins

NCT00527306
View directory record Official record
Conditions
Aphthous Stomatitis
Interventions
multivitamin
Dietary Supplement
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 27, 2020 · Synced Oct 23, 2026, 3:18 PM EDT
Terminated Phase 2 Interventional

Cholecalciferol Supplementation in Strengthening Inspiratory Muscles in Cholecalciferol-Deficient Patients With Chronic Obstructive Pulmonary Disease

NCT02877641
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Muscle Weakness
Interventions
Cholecalciferol, Laboratory Biomarker Analysis, Multivitamin, Placebo, Questionnaire Administration
Dietary Supplement · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
50 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Feb 15, 2017 · Synced Oct 23, 2026, 3:18 PM EDT
Not listed Not applicable Interventional

Supplemental Adjuvants for Intracellular Nutrition and Treatment

NCT00893724
View directory record Official record
Conditions
Neovascular Age-related Macular Degeneration, Diabetic Macular Edema
Interventions
Neutral pills with no medicinal effect, Inosine; Tocopherols, Tocotrienol, CoQ10 combination capsule; Niacinamide SR; Viatmin C; N-acetyl Cysteine; Complete Multivitamin with all minerals, Inosine; Tocopherol, Tocotrienol, CoQ10 combination capsule; Niacinamide; Vitamin C; N-acetyl Cysteine; Complete Multivitamin with all minerals; Minocycline
Drug · Dietary Supplement
Lead sponsor
Mid-Atlantic Retina Consultations, Inc.
Other
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jul 20, 2011 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Not applicable Interventional Results available

VITATOPS: A Study of VITAmins TO Prevent Stroke

NCT00097669
View directory record Official record
Conditions
Stroke, Transient Ischemic Attack
Interventions
Active VITATOPS Tablet (folic acid 2mg, B6 25mg , B12 500ug) or placebo, Placebo
Drug · Other
Lead sponsor
VITATOPS
Government
Eligibility
Not listed
Enrollment
8,164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2009
U.S. locations
4
States / cities
New York, New York • Abington, Pennsylvania • Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 25, 2020 · Synced Oct 23, 2026, 3:18 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Investigation of Macular Pigment Augmentation on Dark Adaptation

NCT00478439
View directory record Official record
Conditions
Aging, Age-Related Macular Degeneration
Interventions
ZeaVision EyePromise Restore, Multivitamin
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
60 Years to 80 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 27, 2010 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 3 Interventional Results available

Atherosclerosis Prevention in Pediatric Lupus Erythematosus (APPLE)

NCT00065806
View directory record Official record
Conditions
Lupus Erythematosus, Systemic
Interventions
Atorvastatin, Placebo atorvastatin
Drug
Lead sponsor
Laura Schanberg
Other
Eligibility
10 Years to 21 Years
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2013 · Synced Oct 23, 2026, 3:18 PM EDT
Not listed Not applicable Interventional

Neurocognitive Functioning Following The PROMETA® Treatment Protocol In Subjects With Alcohol Dependence

NCT00570388
View directory record Official record
Conditions
Alcohol Dependence
Interventions
Prometa Treatment Program
Drug
Lead sponsor
Institute of Addiction Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 16, 2008 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Not applicable Interventional Results available

Study of the Effects of Cerefolin NAC on Inflammation Blood Markers in Older Individuals With Memory Complaints

NCT00597376
View directory record Official record
Conditions
Subjective Memory Loss in Older Persons
Interventions
Cerefolin NAC (a medical food), Cerefolin NAC placebo
Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
60 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 23, 2013 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Multi-vitamin Supplement in Adult Females

NCT03828097
View directory record Official record
Conditions
Health, Subjective
Interventions
Experimental supplement, Placebo
Dietary Supplement
Lead sponsor
Auburn University
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 28, 2020 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Multivitamin/Multimineral/Phytochemical Dietary Supplement on Indices of Human Health

NCT03146312
View directory record Official record
Conditions
Healthy
Interventions
MVM/phytochemical supplement, Placebo
Dietary Supplement
Lead sponsor
USANA Health Sciences
Industry
Eligibility
20 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 30, 2018 · Synced Oct 23, 2026, 3:18 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Vitamin D and Physical Activity on Bone Health

NCT01419730
View directory record Official record
Conditions
Bone Metabolism Biomarkers, Bone Mineral Density, Physical Fitness
Interventions
Vitamin D3, Physical Activity
Drug · Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

COcoa Supplement and Multivitamin Outcomes Study

NCT02422745
View directory record Official record
Conditions
Cardiovascular Disease, Cancer
Interventions
Cocoa extract, Multivitamin, Cocoa extract placebo, Multivitamin placebo
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
60 Years and older
Enrollment
21,442 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2023
U.S. locations
2
States / cities
Boston, Massachusetts • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 23, 2026, 3:18 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Multivitamin and Mineral Supplementation and Healthy Aging

NCT07642869
View directory record Official record
Conditions
Healthy Aging, Multivitamin and Mineral Supplementation
Interventions
MVM Core Blend, MVM Gold Blend, Placebo
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
40 Years to 60 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 3 Interventional

High-Dose Multivitamins Compared to a Placebo in Preventing the Recurrence of Cancer in Patients With Early Stage Bladder Cancer

NCT00003623
View directory record Official record
Conditions
Bladder Cancer
Interventions
multivitamin, Placebo
Dietary Supplement · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2003
U.S. locations
16
States / cities
Scottsdale, Arizona • Urbana, Illinois • Cedar Rapids, Iowa + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2016 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 2 Interventional Results available

Resuscitative Endocrinology:Single-dose Clinical Uses for Estrogen-Traumatic Brain Injury

NCT00973674
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Premarin IV, Placebo
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
2
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 12, 2019 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Metabolic Effect of Metformin in Obese Insulin Resistant Adolescents With Normal Glucose Tolerance

NCT00667498
View directory record Official record
Conditions
Pediatric Obesity, Insulin Resistance, Hyperinsulinemia
Interventions
Metformin, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
13 Years to 17 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 18, 2009 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 3 Interventional

Nutrition, Immunology and Epidemiology of Tuberculosis

NCT00197704
View directory record Official record
Conditions
Tuberculosis
Interventions
Multivitamins, Placebo
Dietary Supplement · Other
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older
Enrollment
876 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 11, 2010 · Synced Oct 23, 2026, 3:18 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

An Exploratory, Randomized, Blinded, Placebo-Controlled Trial of Folic Acid and L-methylfolate in Parkinson's Disease

NCT00853879
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Folic Acid, Vitamin B6, Vitamin B12, B6, B12, L-methylfolate, B6, B12, Placebo
Dietary Supplement
Lead sponsor
Northwell Health
Other
Eligibility
30 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated May 15, 2015 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluate the Effects of Repeated Periods of Modified Fasting to Support Healthy Natural Weight Management and Prevention of Weight Gain

NCT03372109
View directory record Official record
Conditions
Body Weight Changes
Interventions
Meal replacement shake, Multivitamin and mineral capsules, Fish oil with sesame lignans and olive extract softgel, Prebiotic Chewable tablet, Clove Extract and Maqui Berry extract capsule, .Whole Food Blend capsule, Turmeric extract capsule, European White Kidney Bean capsule, Saffron extract capsule, Ubiquinol with Fulvic acid complex softgel, Calcium with Hesperidin and gynostemma extract tablet, Multivitamin and mineral supplement
Dietary Supplement
Lead sponsor
Supplement Formulators, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Apr 17, 2018 · Synced Oct 23, 2026, 3:18 PM EDT
Completed No phase listed Observational

Vitamins, Breastmilk HIV Shedding, and Child Health

NCT00197756
View directory record Official record
Conditions
Maternal and Child Health Outcomes
Interventions
Vitamin A alone, Multivitamins excluding vitamin A, multivitamins including vitamin A, Placebo
Dietary Supplement · Other
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older · Female only
Enrollment
771 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 21, 2009 · Synced Oct 23, 2026, 3:18 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children

NCT02649192
View directory record Official record
Conditions
Healthy Participants
Interventions
Influenza virus vaccine, Vitamins A and D, Placebo
Biological · Dietary Supplement · Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
2 Years to 8 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 29, 2019 · Synced Oct 23, 2026, 3:18 PM EDT