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ClinicalTrials.gov public records Last synced Oct 7, 2026, 6:47 PM EDT

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Showing 361–384 of 5,619 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dietary Supplement Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3

NCT04885803
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Softgel Vitamin D3, Nano Liquid Vitamin D3, 25(OH)D Blood Serum Test, Placebo Control
Dietary Supplement · Diagnostic Test · Other
Lead sponsor
Inspired Life Medical, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Le Sueur, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 24, 2021 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Vitamin D in Vulnerable Adults (VIVA-VA)

NCT01170273
View directory record Official record
Conditions
Frail Elderly, Vitamin d Deficiency
Interventions
vitamin D, placebo
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
65 Years to 95 Years · Male only
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Dec 21, 2016 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Oral Pomegranate Extract on the Microbiome and Skin Biophysical Properties

NCT04596722
View directory record Official record
Conditions
Human Microbiome
Interventions
Pomella, Placebo
Dietary Supplement · Other
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
25 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2021 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Dark Chocolate (70% Cacao) on EEG Brain Waves in Vigorously Active Individuals

NCT03203824
View directory record Official record
Conditions
Healthy
Interventions
dark chocolate, non dark chocolate
Dietary Supplement · Other
Lead sponsor
Loma Linda University
Other
Eligibility
21 Years to 45 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jun 25, 2018 · Synced Oct 7, 2026, 6:47 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Role of Endothelial Dysfunction on Exercise Pressor Reflex in Type 2 Diabetes

NCT07228208
View directory record Official record
Conditions
Type 2 Diabetes (T2DM), Endothelial Dysfunction
Interventions
MitoQ (mitoquinol mesylate), Placebo
Dietary Supplement
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2031
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 14, 2025 · Synced Oct 7, 2026, 6:47 PM EDT
Recruiting Phase 2 Interventional

Biomarker-based Trial of NPC-1 for Alzheimer's Pathology

NCT07236190
View directory record Official record
Conditions
Alzheimer Disease, Mild Cognitive Impairment (MCI), Subjective Cognitive Decline (SCD)
Interventions
natural product combination-1 (NPC1)
Combination Product
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
55 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Oct 7, 2026, 6:47 PM EDT
Recruiting No phase listed Observational

Role of Caveolin 1 (CAV-1) Deficiency in Response to Glucagon-like Peptide 1 (GLP-1) Receptor Agonist Treatment

NCT06069622
View directory record Official record
Conditions
Overweight and Obesity
Interventions
24-hour ambulatory blood pressure, Liberal salt diet
Diagnostic Test · Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Phase 3 Interventional Results available

Second Study of the Effect of Teriparatide on Hip Fracture Healing

NCT01473602
View directory record Official record
Conditions
Femur Neck Fracture
Interventions
Teriparatide, Placebo, Calcium supplementation, Vitamin D supplementation
Drug · Dietary Supplement
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
50 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
19
States / cities
San Diego, California • Golden, Colorado • Washington D.C., District of Columbia + 16 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2015 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Phase 2 Interventional Results available

Study Of Dacomitinib (PF-00299804) In Advanced NSCLC Patients (Post Chemo Or Select First Line) To Evaluate Prophylactic Intervention On Derm And GI AEs And PRO

NCT01465802
View directory record Official record
Conditions
Non Small Cell Lung Cancer (NSCLC)
Interventions
Dacomitinib, Doxycycline, Probiotic, Alclometasone cream
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
79
States / cities
Duarte, California • Fullerton, California • Irvine, California + 49 more
Source: ClinicalTrials.gov public record
Updated Jan 9, 2019 · Synced Oct 7, 2026, 6:47 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Ketone Ester and Salt (KEAS) in Young Adults

NCT05545501
View directory record Official record
Conditions
Salt; Excess, Hypertension
Interventions
No Salt, No β-OHB, High Salt, No β-OHB, High Salt, High β-OHB
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
19 Years to 39 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 7, 2026, 6:47 PM EDT
Recruiting Early Phase 1 Interventional

Nutrition in Patient With Critical Limb Ischemia

NCT03529019
View directory record Official record
Conditions
Critical Limb Ischemia, Malnutrition, Nutritional Supplements
Interventions
Ensure Surgery Immunonutrition Shake, Ensure Enlive Advanced Nutrition Shake
Drug
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years to 99 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 7, 2026, 6:47 PM EDT
Terminated Phase 2 Interventional

Dietary Flaxseed in NSCLC

NCT02475330
View directory record Official record
Conditions
Lung Cancer
Interventions
Flaxseed
Dietary Supplement
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 8, 2021 · Synced Oct 7, 2026, 6:47 PM EDT
Terminated Not applicable Interventional Results available

The Effect of High Antioxidant Cacao on Behaviors in Children With Autism Spectrum Disorder

NCT03195465
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
Dark Chocolate
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
4 Years to 18 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jun 2, 2021 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Not applicable Interventional

Oral Nutritional Supplementation in Children at Risk of Undernutrition

NCT05161000
View directory record Official record
Conditions
Undernutrition
Interventions
Oral Nutritional Supplement, Dietary counseling
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
36 Months to 107 Months
Enrollment
279 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
17
States / cities
Oneonta, Alabama • Glenwood, Arkansas • Hot Springs, Arkansas + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2024 · Synced Oct 7, 2026, 6:47 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

This Repeated Measures Parallel-group Investigation Will Examine the Influence of Short-term Melatonin Supplementation (5mg, 3 x Day for 72 Hours) on Cellular Responses, Functional Performance and Recovery Following an Acute Bout of Dynamic Resistance Exercise in Resistance Trained Men and Women

NCT06617351
View directory record Official record
Conditions
Cell Migration, Cell Invasion, Exercise Recovery
Interventions
Melatonin, Placebo
Dietary Supplement
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Oct 1, 2024 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Phase 2 Interventional Results available

Effects of Vitamin D in Parkinson's Disease (PD)

NCT01119131
View directory record Official record
Conditions
Parkinson Disease, Accidental Falls
Interventions
Vitamin D3, calcium, Placebo
Drug · Dietary Supplement · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
50 Years to 99 Years
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 7, 2016 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Not applicable Interventional

A Single Group Study to Evaluate the Effects of a Probiotic Supplement on Vaginal Health.

NCT06506357
View directory record Official record
Conditions
Vaginal Health, Women's Health
Interventions
Good Girl Probiotics
Dietary Supplement
Lead sponsor
Love Wellness
Industry
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2024 · Synced Oct 7, 2026, 6:47 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

Pilot-Tart Cherry, Mitral Transcriptome, and POAF Incidence

NCT03793465
View directory record Official record
Conditions
Post-operative Atrial Fibrillation (POAF)
Interventions
tart cherry concentrate
Dietary Supplement
Lead sponsor
University of Michigan
Other
Eligibility
50 Years to 79 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioavailability of Zinc and Iron From a Whey-based Protein Supplement Consumed With a Habitual Plant-based Diet

NCT02208622
View directory record Official record
Conditions
Nutritional Deficiency
Interventions
Study 1: Whey Supplement Day 1, Study 1: Whey Supplement Day 2, Study 2: Whey Supplement
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 3 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 5, 2019 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Whey Protein Supplementation in High School Athletes

NCT05589129
View directory record Official record
Conditions
Body Weight Changes, Athletic Performance, Recovery, Sleep
Interventions
Whey Protein Supplement, Carbohydrate Placebo Control
Dietary Supplement
Lead sponsor
University of Utah
Other
Eligibility
13 Years to 18 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 7, 2026, 6:47 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Dietary Sodium, Oxidative Stress, and Pulsatile Hemodynamics

NCT04233957
View directory record Official record
Conditions
Sodium Excess
Interventions
High Sodium, Placebo
Dietary Supplement · Other
Lead sponsor
University of Delaware
Other
Eligibility
21 Years to 45 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotic and Gastrointestinal Symptoms Due to Menstruation in Healthy Women

NCT04457401
View directory record Official record
Conditions
Menstrual Discomfort
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
187 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 28, 2024 · Synced Oct 7, 2026, 6:47 PM 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 5, 2023 · Synced Oct 7, 2026, 6:47 PM EDT
Completed Phase 1 Interventional

Comparing Tolerability and Absorption of Racemic and R-lipoic Acid in Progressive Multiple Sclerosis

NCT03493841
View directory record Official record
Conditions
Multiple Sclerosis, Progressive Multiple Sclerosis, Secondary Progressive Multiple Sclerosis, Primary Progressive Multiple Sclerosis
Interventions
Alpha Lipoic Acid
Drug
Lead sponsor
Rebecca Spain
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 22, 2019 · Synced Oct 7, 2026, 6:47 PM EDT