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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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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 4, 2026, 10:18 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

PUSH Plus Protein Pilot for Hip Fracture Patients

NCT03410823
View directory record Official record
Conditions
Hip Fracture
Interventions
PUSH, Protein, Nutrition
Behavioral · Dietary Supplement
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
60 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
2
States / cities
Baltimore, Maryland • Towson, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Sep 4, 2026, 10:18 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Trial of Antibody Responses by Vitamin Supplementation

NCT03859687
View directory record Official record
Conditions
Healthy Participants
Interventions
Vitamin A supplementation, No vitamin A supplementation
Biological
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
1 Year to 4 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Sep 4, 2026, 10:18 AM 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 4, 2026, 10:18 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Pill Study Hyperthermia Device (Heckel HT 3000): Monitoring Core Body Temperature Using Wireless Technology

NCT02340377
View directory record Official record
Conditions
Core Body Temperature
Interventions
ELITE 3 HQ
Device
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 9, 2015 · Synced Sep 4, 2026, 10:18 AM 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 10, 2010 · Synced Sep 4, 2026, 10:18 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioavailability of Select Nutrients From Two Formulations of a Multivitamin/Mineral Supplement

NCT05646368
View directory record Official record
Conditions
Bioavailability
Interventions
Formulation #1, Formulation #2
Dietary Supplement
Lead sponsor
Midwest Center for Metabolic and Cardiovascular Research
Other
Eligibility
18 Years to 45 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Port Saint Lucie, Florida
Source: ClinicalTrials.gov public record
Updated May 16, 2023 · Synced Sep 4, 2026, 10:18 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Use of Ritual Epost Postnatal Multivitamins During the Postpartum Period

NCT05736562
View directory record Official record
Conditions
Lactation Disorder - Postpartum Condition or Complication, Nutrition, Healthy
Interventions
Ritual Epre Multimineral-Vitamin Supplement, Placebo Control
Dietary Supplement
Lead sponsor
City University of New York
Other
Eligibility
18 Years and older · Female only
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
2
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 4, 2026, 10:18 AM EDT
Completed No phase listed Observational

Screening Tests in Detecting Colorectal Cancer

NCT00025025
View directory record Official record
Conditions
Colorectal Cancer
Interventions
sample testing
Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
65 Years to 80 Years
Enrollment
4,482 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2009
U.S. locations
65
States / cities
Tuscon, Arizona • Oakland, California • Aurora, Colorado + 38 more
Source: ClinicalTrials.gov public record
Updated Jul 3, 2016 · Synced Sep 4, 2026, 10:18 AM 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 4, 2026, 10:18 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

A Study to Investigate the Effect of a Multivitamin, Multi-nutrient Supplement on Mental and Emotional Wellbeing

NCT07146321
View directory record Official record
Conditions
Menopause
Interventions
multi-vitamin, multi-nutrient, Placebo
Dietary Supplement
Lead sponsor
Biologica Inc
Industry
Eligibility
43 Years to 55 Years · Female only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Sep 4, 2026, 10:18 AM EDT
Withdrawn No phase listed Observational

Therapy for Chronic Fatigue Syndrome: A Presumptive Mitochondrial Disorder

NCT01872351
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Nutraceuticals
Drug
Lead sponsor
Columbia University
Other
Eligibility
20 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 13, 2016 · Synced Sep 4, 2026, 10:18 AM 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 4, 2026, 10:18 AM EDT
Completed Phase 3 Interventional Results available

Clinical Trial Ceftriaxone in Subjects With ALS

NCT00349622
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis, ALS
Interventions
ceftriaxone, placebo
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
513 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
50
States / cities
Phoenix, Arizona • Davis, California • Fresno, California + 40 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2014 · Synced Sep 4, 2026, 10:18 AM 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 4, 2026, 10:18 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Personalized Lifestyle Intervention for Improving Functional Health Outcomes Using N-of-1 Tent-Umbrella-Bucket Design

NCT04005456
View directory record Official record
Conditions
Health, Subjective, Gastrointestinal Dysfunction, Cardiovascular Risk Factor, Autoimmune Diseases, Dental Diseases, Hormone Disturbance, Neurocognitive Dysfunction
Interventions
Supplements and/or medical foods, Behavioral change support program, Food plan
Dietary Supplement · Behavioral · Other
Lead sponsor
Metagenics, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Gig Harbor, Washington
Source: ClinicalTrials.gov public record
Updated Oct 29, 2023 · Synced Sep 4, 2026, 10:18 AM EDT
Completed Phase 3 Interventional

A Multivitamin Comparison Study in Kidney Transplant Recipients.

NCT00217100
View directory record Official record
Conditions
Kidney Transplant Recipients
Interventions
Multivitamin, Placebo
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 24, 2012 · Synced Sep 4, 2026, 10:18 AM EDT
Completed No phase listed Observational

A Comparison of Two Caloric Supplements in the Prevention of Weight Loss in Patients With AIDS Who Take Daily Multivitamin and Mineral Supplements

NCT00001077
View directory record Official record
Conditions
HIV Infections, HIV Wasting Syndrome
Interventions
Multivitamin and mineral supplements, Peptamen, NuBasics
Dietary Supplement
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
536 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 1998
U.S. locations
17
States / cities
San Francisco, California • Denver, Colorado • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2013 · Synced Sep 4, 2026, 10:18 AM EDT
Completed Phase 4 Interventional Results available

Weight Loss Aid in an Exposed Population

NCT03582722
View directory record Official record
Conditions
Polybrominated Biphenyl Poisoning
Interventions
Orlistat, Placebo capsule, Multivitamin
Drug · Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Sep 4, 2026, 10:18 AM 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 23, 2026 · Synced Sep 4, 2026, 10:18 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Vitamin D Supplementation in the Prevention and Mitigation of COVID-19 Infection

NCT04482673
View directory record Official record
Conditions
COVID-19, Vitamin D Deficiency, Respiratory Viral Infection
Interventions
Daily Vitamin D3, Daily placebo, Bolus vitamin D3, Bolus placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
50 Years and older
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 23, 2023 · Synced Sep 4, 2026, 10:18 AM 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 4, 2026, 10:18 AM EDT
Completed Not applicable Interventional

Therapeutic Diets in Alzheimer's Disease

NCT03860792
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Ketogenic Diet, Therapeutic Lifestyles Changes Diet
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
50 Years to 90 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Fairway, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 4, 2026, 10:18 AM EDT
Completed Phase 2Phase 3 Interventional Results available

PTH & Ibandronate Combination Study (PICS)

NCT00683163
View directory record Official record
Conditions
Osteoporosis
Interventions
PTH(1-84), Ibandronate, Placebo injection, Placebo pills
Drug · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
55 Years to 75 Years · Female only
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 4, 2013 · Synced Sep 4, 2026, 10:18 AM EDT