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Showing 25–43 of 19 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Oral Multivitamin Clear all
Completed Phase 1 Interventional Results available

Pre-operative IRX-2 in Early Stage Breast Cancer (ESBC)

NCT02950259
View directory record Official record
Conditions
Breast Neoplasm, Breast Neoplasm, Male, Triple Negative Breast Cancer
Interventions
Cyclophosphamide, Indomethacin, Omeprazole, Multivitamin
Drug · Dietary Supplement
Lead sponsor
Providence Health & Services
Other
Eligibility
Not listed
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Phase 2 Interventional Results available

Effects of an Antioxidant-Enriched Multivitamin Supplement on Inflammation and Oxidative Stress in Cystic Fibrosis

NCT01859390
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
AquADEKs-2, control multivitamin
Drug · Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
10 Years and older
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
15
States / cities
Tucson, Arizona • Aurora, Colorado • Orlando, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2017 · Synced Sep 25, 2026, 6:24 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 25, 2026, 6:24 PM EDT
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 25, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults

NCT02876315
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Redoxon VI, placebo
Dietary Supplement
Lead sponsor
Oregon State University
Other
Eligibility
55 Years to 75 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Corvallis, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Phase 3 Interventional Results available

Prevention of Osteoporosis in Bone Marrow Transplantation (BMT) Patients

NCT00824993
View directory record Official record
Conditions
Hematological Malignancies
Interventions
Ibandronate, Vitamin Supplements
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 12, 2018 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Phase 3 Interventional

Multivitamin Dosage Regimens in the Prevention of Adverse Pregnancy Outcomes Among HIV-Positive Women

NCT00197678
View directory record Official record
Conditions
HIV Infections
Interventions
Multivitamins-Multiples of RDA, Multivitamins-Single RDA
Dietary Supplement
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older · Female only
Enrollment
1,141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 10, 2010 · Synced Sep 25, 2026, 6:24 PM EDT
Withdrawn Phase 4 Interventional

Histidine Oral Supplementation as a Therapeutic Modality for Alzheimer's Disease

NCT06169826
View directory record Official record
Conditions
Alzheimer Disease
Interventions
l-Histidine, Control
Drug · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
50 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 25, 2026, 6:24 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Benefits of Natural Medicine, Vitamin IV Therapy and Supplements: Maintaining Good Health Through Nature

NCT05067998
View directory record Official record
Conditions
Anxiety Disorders and Symptoms, Fibromyalgia, Arthritis, Chronic Pain, Hypertension,Essential
Interventions
IV Vitamin Infused Therapy Treatment, Herbal medicine
Dietary Supplement · Drug
Lead sponsor
Faith A. Richardson
Other
Eligibility
21 Years to 80 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Dover, Delaware
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigation of the Usefulness of Omega 3 Vitamins in the Relief of Hot Flashes in Menopausal Women.

NCT00599456
View directory record Official record
Conditions
Hot Flashes, Menopause
Interventions
Omega 3 fatty acid vitamins, Placebo capsules
Dietary Supplement
Lead sponsor
Christiana Care Health Services
Other
Eligibility
Up to 65 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated May 9, 2017 · Synced Sep 25, 2026, 6:24 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 25, 2026, 6:24 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 14, 2017 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Not applicable Interventional

Perioperative Oral Nutrition Intervention for Patients Undergoing Radical Cystectomy

NCT02050451
View directory record Official record
Conditions
Bladder Cancer
Interventions
Ensure Plus®, Multivitamin
Dietary Supplement
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 90 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Phase 2Phase 3 Interventional

Prometa Pharmacotherapy for Methamphetamine Dependence

NCT00260481
View directory record Official record
Conditions
Drug Abuse, Drug Dependence
Interventions
Prometa, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 21, 2016 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Randomized Trial: Maternal Vitamin D Supplementation to Prevent Childhood Asthma (VDAART)

NCT00920621
View directory record Official record
Conditions
Asthma
Interventions
Vitamin D 3 cholecalciferol, Vitamin D3
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 39 Years · Female only
Enrollment
876 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2023
U.S. locations
3
States / cities
San Diego, California • Boston, Massachusetts • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Sep 25, 2026, 6:24 PM EDT
Withdrawn Phase 2 Interventional

Growth Hormone and Exclusion Diet Therapy in Juvenile Crohn's Disease

NCT01647412
View directory record Official record
Conditions
Crohn's Disease
Interventions
Growth Hormone, Nutraceutical Combination, Exclusion Diet, Placebo Growth Hormone
Drug · Dietary Supplement · Other
Lead sponsor
Columbia University
Other
Eligibility
10 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2015 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Not applicable Interventional

Isoflavones & Lycopene in Localized Prostate Ca:Prior to Radical Prostatectomy

NCT00042731
View directory record Official record
Conditions
Prostate Cancer
Interventions
Lycopene, Multivitamin, Soy isoflavones
Dietary Supplement
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
45 Years to 80 Years · Male only
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
5
States / cities
Phoenix, Arizona • Tampa, Florida • Savannah, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2012 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Phase 1 Interventional

Burn Micronutrient Repletion Pilot Study

NCT00879723
View directory record Official record
Conditions
Burn
Interventions
Vitamin and Mineral supplementation
Dietary Supplement
Lead sponsor
Southern Illinois University
Other
Eligibility
19 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Springfield, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 25, 2015 · Synced Sep 25, 2026, 6:24 PM EDT
Completed Not applicable Interventional Results available

Vitamin D Absorption in HIV Infected Young Adults Being Treated With Tenofovir Containing cART

NCT01751646
View directory record Official record
Conditions
HIV Infection
Interventions
Vitamin D3 50,000 IU, Vitamin D3 placebo
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
16 Years to 24 Years
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
16
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Fort Lauderdale, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2019 · Synced Sep 25, 2026, 6:24 PM EDT