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Showing 1–24 of 156 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: multivitamin Clear all
Completed Not applicable Interventional

Vitamin D, Cardiovascular Disease, and African Americans

NCT01655810
View directory record Official record
Conditions
Vitamin D Deficiency, Type 2 Diabetes Mellitus, Cardiovascular Disease
Interventions
Vitamin D3, Calcium carbonate
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years to 70 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 4, 2020 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin/Mineral Absorption From Two Different Supplements

NCT05336994
View directory record Official record
Conditions
Healthy Nutrition
Interventions
Multivitamin/mineral supplement A, Multivitamin/mineral supplement B
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 32 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Sep 1, 2022 · Synced Sep 2, 2026, 10:16 PM EDT
Recruiting Not applicable Interventional

Preserving Physical Function in Older Adults With Cancer: Impact of an Optimizing Nutrition Intervention Applied Before and After Surgery

NCT05912257
View directory record Official record
Conditions
Cancer
Interventions
Structured perioperative nutrition and exercise, Nutrition and Exercise Counseling
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
55 Years and older
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Phase 2 Interventional Results available

Resuscitative Endocrinology: Single-dose Clinical Uses for Estrogen-Traumatic Hemorrhagic Shock (RESCUE - Shock)

NCT00973102
View directory record Official record
Conditions
Hemorrhagic Shock
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 Mar 18, 2020 · Synced Sep 2, 2026, 10:16 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 24, 2020 · Synced Sep 2, 2026, 10:16 PM EDT
Terminated Not applicable Interventional

Nutritional Treatment of Overweight Adolescents With Cardiovascular Risk Factors (PowerUp)

NCT00477477
View directory record Official record
Conditions
Childhood Obesity, Dyslipidemia, Insulin Resistance, Hypertension
Interventions
Diet
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
8 Years to 17 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 26, 2014 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Impact of Vitamin D Supplementation on Lactation Associated Bone Loss

NCT00903344
View directory record Official record
Conditions
Osteoporosis
Interventions
Vitamin D3, Multivitamin
Drug · Dietary Supplement
Lead sponsor
Leigh Eck, MD
Other
Eligibility
18 Years and older · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 17, 2014 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Phase 4 Interventional Results available

Vitamin D Repletion in Primary Hyperparathyroidism

NCT01306656
View directory record Official record
Conditions
Primary Hyperparathyroidism, Vitamin D Deficiency
Interventions
10,000 IU Vitamin D3, Placebo, Vitamin D
Drug · Other · Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 15, 2019 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Phase 1Phase 2 Interventional

Safety and Efficacy of an Antioxidant-rich Multivitamin Supplement in Cystic Fibrosis

NCT01018303
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
AquADEK
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
10 Years to 40 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 14, 2012 · Synced Sep 2, 2026, 10:16 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 26, 2020 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Folic Acid for Vascular Outcome Reduction In Transplantation (FAVORIT)

NCT00064753
View directory record Official record
Conditions
Chronic Kidney Disease, Cardiovascular Disease, Death
Interventions
High Dose Multivitamin, Low Dose Multivitamin
Drug · Device
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
35 Years to 75 Years
Enrollment
4,110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2011
U.S. locations
27
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 22 more
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Supplementary Vitamins on Oxidant Gene Expression in the Lungs of Healthy Smokers

NCT00565214
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
Group 1, Group 2
Dietary Supplement
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 70 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 24, 2017 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Trial Comparing Iron Supplementation Versus Routine Iron Intake in Very Low Birth Weight Infants

NCT01125163
View directory record Official record
Conditions
Iron Deficiency Anemia
Interventions
Iron Supplement, multivitamin
Dietary Supplement
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
24 Weeks to 32 Weeks
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 3, 2019 · Synced Sep 2, 2026, 10:16 PM EDT
Terminated Phase 4 Interventional

Effect of Perioperative Acetaminophen Dosing on Patients Undergoing Surgical Treatment of Basilar Thumb Arthritis

NCT05556356
View directory record Official record
Conditions
Carpometacarpal Osteoarthritis
Interventions
Acetaminophen, Placebo: Multivitamin
Drug · Other
Lead sponsor
Indiana Hand to Shoulder Center
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 7, 2024 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Multiple Risk Behavior Intervention in Health Care Settings

NCT01415492
View directory record Official record
Conditions
Health Behavior, Risk Reduction Behavior
Interventions
HD2+
Behavioral
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
2,440 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional

A Whole-food, Plant-Based Nutrition Intervention in Women With Metastatic Breast Cancer

NCT03045289
View directory record Official record
Conditions
Metastatic Breast Cancer, Breast Cancer Stage IV
Interventions
Plant-Based Diet
Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jul 12, 2022 · Synced Sep 2, 2026, 10:16 PM EDT
Not listed No phase listed Observational

Digital Evaluations and Technologies Enabling Clinical Translation for AD

NCT05385913
View directory record Official record
Conditions
Alzheimer Disease, Early Onset
Interventions
Multivitamin-no intervention
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
65 Years and older
Enrollment
200 participants
Timeline
2022 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Sep 2, 2026, 10:16 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 28, 2019 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional Results available

Prehabilitation of Veterans With Exercise and Nutrition

NCT04485611
View directory record Official record
Conditions
Frailty
Interventions
Supervised aerobic + resistance training and nutritional support
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
50 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Sep 2, 2026, 10:16 PM EDT
Withdrawn Phase 2 Interventional

Chronic Fatigue Syndrome: A Presumptive Mitochondrial Disorder

NCT01471652
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Nutraceutical supplements, Placebo
Drug
Lead sponsor
Columbia University
Other
Eligibility
25 Years to 55 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2015 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Phase 3 Interventional Results available

Convalescent Plasma in Outpatients With COVID-19

NCT04355767
View directory record Official record
Conditions
Covid19
Interventions
Convalescent Plasma, Saline
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
511 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
53
States / cities
Chandler, Arizona • Phoenix, Arizona • La Jolla, California + 41 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2021 · Synced Sep 2, 2026, 10:16 PM EDT
Active, not recruiting Not applicable Interventional

The TRIABETES - ARMMS-T2D Study: A Randomized Trial to Compare Surgical and Medical Treatments for Type 2 Diabetes

NCT01047735
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Roux-en-Y Gastric Bypass Surgery, Laparoscopic Adjustable Gastric Banding, Lifestyle Weight Loss Intervention
Procedure · Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
25 Years to 55 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2028
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 2, 2026, 10:16 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 25, 2018 · Synced Sep 2, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pharmacokinetic Analysis of Nutrient Absorption From a Novel Liposomal Multivitamin/Mineral Formulation

NCT05060367
View directory record Official record
Conditions
Mineral Absorption
Interventions
Liposomal multivitamin/mineral, Standard multivitamin/mineral
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Aug 9, 2022 · Synced Sep 2, 2026, 10:16 PM EDT