Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 3, 2026, 7:30 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 311 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Vitamin Supplements Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Supplements and Personal Energy Tracking Device to Promote and Maintain Healthy Weight

NCT00502658
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Dietary supplement containing vitamins, minerals, and herbs, Shakes with nutrients and herbs, Control dietary supplement, Isocaloric, isonitrogenous control shakes without herbs, Personal energy tracking tool
Behavioral
Lead sponsor
Pharmanex
Industry
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Provo, Utah
Source: ClinicalTrials.gov public record
Updated Mar 27, 2008 · Synced Sep 3, 2026, 7:30 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Oral Nutrition Impact on Tear Film

NCT01561040
View directory record Official record
Conditions
Dry Eye Syndrome
Interventions
Omega 3, Vitamins A, D3 and E
Dietary Supplement
Lead sponsor
Eye and Vision Technologies and Research Institute
Network
Eligibility
18 Years to 79 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
4
States / cities
Conifer, Colorado • Oak Lawn, Illinois • Lexington, Kentucky + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2012 · Synced Sep 3, 2026, 7:30 AM EDT
Completed No phase listed Observational

A Registry for Participants With Chronic Hypoparathyroidism

NCT01922440
View directory record Official record
Conditions
Hypoparathyroidism
Interventions
No intervention
Other
Lead sponsor
Takeda
Industry
Eligibility
Not listed
Enrollment
1,339 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2026
U.S. locations
54
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 3, 2026, 7:30 AM 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 3, 2026, 7:30 AM EDT
Completed Not applicable Interventional Results available

EnBrace HR for Depression Treatment and Prevention in Women Trying to Conceive and Early Pregnancy

NCT02676882
View directory record Official record
Conditions
Depressive Disorder, Pregnancy
Interventions
EnBrace HR
Dietary Supplement
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 19, 2019 · Synced Sep 3, 2026, 7:30 AM EDT
Completed Phase 3 Interventional Results available

Heartland Osteoporosis Prevention Study

NCT02186600
View directory record Official record
Conditions
Osteopenia
Interventions
Calcium Carbonate, Vitamin D3, Risedronate, Bone-loading exercises
Drug · Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older · Female only
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Sep 3, 2026, 7:30 AM 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 3, 2026, 7:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial.

NCT00882505
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
vitamin D, Placebo
Dietary Supplement · Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 47 Years · Female only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Sep 3, 2026, 7:30 AM EDT
Completed Phase 2 Interventional Results available

Dietary Nitrate Supplements and Ischemic Stroke Recovery

NCT02838901
View directory record Official record
Conditions
Stroke, Ischemic Stroke, Cerebrovascular Accident
Interventions
Beet it Beetroot juice, Beet It Placebo Beetroot juice
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 9, 2018 · Synced Sep 3, 2026, 7:30 AM EDT
Completed Phase 2 Interventional

Fortifying Healthy Behaviors, Optimizing Medical Therapies and Enhancing Cognitive Function in Older Adults-pilot Study

NCT07000734
View directory record Official record
Conditions
Aging, Cognitive Decline, Older Adults, Cardiovascular, Sedentary Behaviors, Immune Senescence, Motor Function
Interventions
Risk managment, Dasatinib, Quercetin (dietary supplement), Vortioxetine
Behavioral · Drug · Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 3, 2026, 7:30 AM EDT
Completed Not applicable Interventional

Vitamin D Supplementation in Glomerular Disease

NCT01835639
View directory record Official record
Conditions
Glomerular Disease
Interventions
Cholecalciferol, 2000 or 4000 IUs by mouth daily for 12 weeks
Dietary Supplement
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
5 Years to 30 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
5
States / cities
Wilmington, Delaware • Baltimore, Maryland • New Hyde Park, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2019 · Synced Sep 3, 2026, 7:30 AM EDT
Completed Not applicable Interventional

A Nutrition Intervention for Arthritis -4 (WCCR-ARTH4)

NCT03580681
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Plant-based diet, Supplement
Other · Dietary Supplement
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years to 90 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 17, 2021 · Synced Sep 3, 2026, 7:30 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 3, 2026, 7:30 AM EDT
Completed Not applicable Interventional

Vitamin D to Improve Glucose Metabolism and Reduce Inflammation in Obese Adolescents

NCT00994396
View directory record Official record
Conditions
Obesity, Glucose Intolerance, Inflammation
Interventions
Placebo, Vitamin D 3 cholecalciferol
Dietary Supplement
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
9 Years to 19 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 5, 2016 · Synced Sep 3, 2026, 7:30 AM 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 3, 2026, 7:30 AM 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 3, 2026, 7:30 AM 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 3, 2026, 7:30 AM 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 3, 2026, 7:30 AM EDT
Terminated Phase 4 Interventional Results available

The Relationship of Hemoglobin A1c and Diabetic Wound Healing

NCT01350102
View directory record Official record
Conditions
Diabetes, Type 1, Diabetes, Type 2, Foot Ulcer, Diabetic
Interventions
Bacitracin, AmeriGel®, Vitamin C
Drug · Dietary Supplement
Lead sponsor
Susan Hassenbein
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 11, 2017 · Synced Sep 3, 2026, 7:30 AM EDT
Recruiting Not applicable Interventional

Viome Nutritional Programs to Improve Clinical Outcomes for Metabolic Conditions

NCT05564273
View directory record Official record
Conditions
Metabolic Health
Interventions
VIOME Precision Nutrition Program, VIOME-designed condition-based supplements
Combination Product · Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
25 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Sep 3, 2026, 7:30 AM 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 3, 2026, 7:30 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Impact of Maternal Vitamin A or Beta-Carotene Supplementation on Maternal and Infant Mortality in Bangladesh

NCT00198822
View directory record Official record
Conditions
Vitamin A Deficiency, Maternal Mortality, Infant Mortality
Interventions
Vitamin A or Beta-Carotene Supplements
Dietary Supplement
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
15 Years to 49 Years · Female only
Enrollment
59,666 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 6, 2012 · Synced Sep 3, 2026, 7:30 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 3, 2026, 7:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Single-Group Clinical Trial Investigating the Effects of a Hair Vitamin Combination on Hair Growth and Hair Health

NCT06120933
View directory record Official record
Conditions
Hair Health, Hair Loss
Interventions
Hair Nutra Growth Supplement & Hair Nutra Boost Supplement, Hair Nutra Growth
Dietary Supplement
Lead sponsor
BrandiZone
Industry
Eligibility
30 Years and older · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Nov 6, 2023 · Synced Sep 3, 2026, 7:30 AM EDT