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Showing 1–24 of 95 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 3 Interventional

Low Dose Supplemental External Radiation With Pd-103 Versus Pd-103 Alone for Prostate Cancer

NCT00241384
View directory record Official record
Conditions
Prostate Cancer
Interventions
External beam radiation, Pd-103
Procedure
Lead sponsor
Schiffler Cancer Center
Other
Eligibility
40 Years to 80 Years · Male only
Enrollment
396 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2015
U.S. locations
2
States / cities
Seattle, Washington • Wheeling, West Virginia
Source: ClinicalTrials.gov public record
Updated Nov 16, 2015 · Synced Sep 3, 2026, 2:35 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Dietary Supplementation on Gastrointestinal Barrier Function

NCT06262880
View directory record Official record
Conditions
Intestinal Permeability
Interventions
plant derived phenolics, Microcrystaline cellulose (MCC)
Dietary Supplement · Other
Lead sponsor
Brightseed
Industry
Eligibility
30 Years to 69 Years
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 7, 2024 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of New Zealand Blackcurrant Supplementation on Exercise and Cognitive Performance in Resistance-Trained Adults

NCT07619976
View directory record Official record
Conditions
Resistance Exercise Performance, Cognitive Function, Anaerobic Performance, Dietary Supplementation Athletic Performance
Interventions
Low-dose Blackcurrant Supplement, High-dose Blackcurrant Supplement, Maltodextrin (Placebo)
Dietary Supplement
Lead sponsor
Jacksonville State University
Other
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Jacksonville, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessing the Dose Response of a Lead Fiber Snack Prototype

NCT04729816
View directory record Official record
Conditions
Microbiota, Gastrointestinal Microbiome
Interventions
Controlled, high fat/low fiber diet background diet, sequentially supplemented with an escalating dose of a fiber-blend snack food.
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 26, 2024 · Synced Sep 3, 2026, 2:35 PM EDT
Withdrawn Phase 4 Interventional

Hydroxychloroquine in SARS-CoV-2 (COVID-19) Pneumonia Trial

NCT04382625
View directory record Official record
Conditions
SARS-CoV-2 Pneumonia, COVID-19
Interventions
Hydroxychloroquine
Drug
Lead sponsor
Kootenai Health
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Coeur d'Alene, Idaho
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Sep 3, 2026, 2:35 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Measuring Uniformed Servicemembers' Fitness Scores on Creatine Loading and Exercise

NCT02661334
View directory record Official record
Conditions
Physical Fitness
Interventions
Creatine Monohydrate, Rice Flour
Dietary Supplement
Lead sponsor
David Grant U.S. Air Force Medical Center
Federal
Eligibility
18 Years to 89 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Fairfield, California
Source: ClinicalTrials.gov public record
Updated Apr 2, 2020 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of a Meal on Vitamin D Absorption

NCT01268176
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
50 Years to 69 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 12, 2013 · Synced Sep 3, 2026, 2:35 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Saffron as Anti Inflammatory Agent In Patients With Inflammatory Bowel Disease

NCT04749576
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
saffron supplement for IBD
Dietary Supplement
Lead sponsor
Howard University
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Phase 2 Interventional Results available

Lipoic Acid Supplement for Cystine Stone

NCT02910531
View directory record Official record
Conditions
Cystinuria
Interventions
Alpha lipoic acid, Placebo
Dietary Supplement · Drug
Lead sponsor
Thomas Chi, MD
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 3, 2026, 2:35 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Renal Metabolism of Glycolate to Oxalate

NCT04437225
View directory record Official record
Conditions
Healthy
Interventions
Low oxalate controlled Diet, Primed, continuous intravenous infusion of 13C2-Glycolate, Bolus intravenous infusion of 13C2-Glycolate, Oral bolus administration of 13C2-Glycolate
Dietary Supplement · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2030
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

BLOODSAFE Ghana- Iron and Nutritional Counselling Strategy

NCT06101238
View directory record Official record
Conditions
Blood Donation
Interventions
supplementation with low dose elemental iron
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 60 Years
Enrollment
533 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Low-dose Iron Supplementation and Markers of Iron Status Among Non-anemic, Iron-deficient Women

NCT02683369
View directory record Official record
Conditions
Non-anemic Iron Deficiency
Interventions
Blood Builder®/Iron Response®
Dietary Supplement
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety and Dose Escalation Study of Zinc Supplementation in Critically Ill Children

NCT01062009
View directory record Official record
Conditions
Critical Illness
Interventions
Zinc sulfate
Drug
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
30 Days to 10 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Aug 19, 2019 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Phase 3 Interventional Results available

CLARITY Extension Study

NCT00641537
View directory record Official record
Conditions
Relapsing-Remitting Multiple Sclerosis
Interventions
Cladribine, Placebo
Drug
Lead sponsor
EMD Serono Research & Development Institute, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
867 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
17
States / cities
Boulder, Colorado • Atlanta, Georgia • Chicago, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Dec 6, 2020 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Deficiency and Dysautonomia

NCT03032328
View directory record Official record
Conditions
Vitamin D Deficiency, Orthostatic Intolerance, Nausea
Interventions
vitamin D supplement
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
10 Years to 18 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 26, 2023 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Glycomacropeptide and Women's Health

NCT05551091
View directory record Official record
Conditions
Obesity
Interventions
glycomacropeptide (GMP)
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Up to 90 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 2, 2022 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Xoçai Antioxidant Supplements on Atherosclerosis Risk Factors

NCT00666250
View directory record Official record
Conditions
Hypertension, Dyslipidemia, Hyperglycemia
Interventions
Xocai Activ drink
Dietary Supplement
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 95 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 7, 2016 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Lycopene in Healthy Male Participants

NCT00450957
View directory record Official record
Conditions
Healthy, no Evidence of Disease, Prostate Cancer
Interventions
lycopene, pharmacological study
Dietary Supplement · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 55 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 14, 2015 · Synced Sep 3, 2026, 2:35 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Dietary Supplementation on Body Fat Composition

NCT06296251
View directory record Official record
Conditions
Dyslipidemias, Pre-diabetes
Interventions
Placebo treatment, Plant derived phenolics
Other · Dietary Supplement
Lead sponsor
Brightseed
Industry
Eligibility
18 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 3, 2026, 2:35 PM EDT
Recruiting Phase 2 Interventional

Research On Nicotinamide Riboside Supplement Support in MDS (ROSS Trial)

NCT07579429
View directory record Official record
Conditions
Clonal Cytopenia of Undetermined Significance, Myelodysplastic Syndrome
Interventions
Nicotinamide Riboside, Pterostilbene
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy of a Microalgae Extract PhaeoSOL Combined With Natural Stimulant on Cognitive Function and Gaming Performance of Video Gamers

NCT04851899
View directory record Official record
Conditions
Cognitive Function, Video Gamers
Interventions
Phaeosol low dose, Phaeosol high dose, Placebo
Dietary Supplement
Lead sponsor
Microphyt
Industry
Eligibility
18 Years to 40 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Sep 22, 2022 · Synced Sep 3, 2026, 2:35 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nicotinamide Mononucleotide Supplementation for Exercise Tolerance Improvement in Healthy Older Adults

NCT07144527
View directory record Official record
Conditions
Aging, Frailty, Exercise Tolerance, Healthy Male and Female Subjects
Interventions
NMN, betaine, low-dose hydrogen peroxide (EGA), Nicotinamide Mononucleotide (NMN), Placebo
Dietary Supplement
Lead sponsor
Scott Silveira
Other
Eligibility
60 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Beverly Hills, California
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

ButyraGen™, Short Chain Fatty Acids and Gut Microbiome

NCT05601635
View directory record Official record
Conditions
Healthy
Interventions
ButyraGen™
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Sep 3, 2026, 2:35 PM EDT
Completed Phase 2 Interventional Results available

Study Comparing Three Doses of MDMA Along With Therapy in Veterans With Posttraumatic Stress Disorder

NCT01211405
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
Low dose MDMA-assisted therapy, Medium dose MDMA-assisted therapy, Full dose MDMA-assisted therapy, Therapy
Drug · Behavioral
Lead sponsor
Resilient Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Mt. Pleasant, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Sep 3, 2026, 2:35 PM EDT