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ClinicalTrials.gov public records Last synced Oct 3, 2026, 4:35 PM EDT

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Showing 25–48 of 1,159 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dietary Supplement - Placebo Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Cranberry Supplementation, Viral Defense, Antibody Response to the Flu Shot

NCT04597554
View directory record Official record
Conditions
Nutrition Immunology
Interventions
Cranberry, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
40 Years to 80 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 3, 2026, 4:35 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Magnesium L-Threonate on Sleep, Recovery, and Athletic Performance in Collegiate Athletes

NCT07015047
View directory record Official record
Conditions
Recovery of Function (G11.427.698.620), Athletic Performance, Heart Rate Variability (HRV)
Interventions
Magnesium L-Threonate, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 35 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 15, 2025 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Phase 1 Interventional

A Pilot Study of Vitamin D in Boys With X-linked Adrenoleukodystrophy

NCT02595489
View directory record Official record
Conditions
X-linked Adrenoleukodystrophy
Interventions
vitamin D3
Dietary Supplement
Lead sponsor
Stanford University
Other
Eligibility
18 Months to 25 Years · Male only
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 9, 2022 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Shroom Tech Sport Supplementation and Concurrent Training

NCT02383017
View directory record Official record
Conditions
Body Composition, Performance Measures, Hormone Profiles, Blood Lipid Profiles
Interventions
Shroom Tech Sport, Placebo
Dietary Supplement
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Dec 17, 2020 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Short-term Effects of Caffeine and a Multi-ingredient Pre-workout on Exercise Performance

NCT07024940
View directory record Official record
Conditions
Coffee, Anthocyanins, Exercise Performance
Interventions
Ethiopian Coffee, Supplement, Water (Placebo)
Other · Dietary Supplement
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 35 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 3, 2026, 4:35 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Dietary Supplements on Muscle Mass and Function While Using GLP-1 Medication

NCT07806838
View directory record Official record
Conditions
Obesity & Overweight, Muscle Mass and Strength, Muscle Function
Interventions
Whey Protein Supplementation, Maltodextrin Placebo Capsules, Mixed Spice Capsules
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 3, 2026, 4:35 PM EDT
Recruiting Phase 2 Interventional

Exercise Training and NR Supplementation Trial to Improve Fitness in AYA HCT Survivors

NCT05194397
View directory record Official record
Conditions
Lymphoblastic Leukemia, Cancer Survivors, Aplastic Anemia, Myelodysplastic Syndromes, Myeloid Leukemia
Interventions
Nicotinamide Riboside, Placebo, Exercise Intervention
Dietary Supplement · Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
10 Years to 30 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
3
States / cities
Duarte, California • Philadelphia, Pennsylvania • Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Phase 2 Interventional

Tricaprilin In Age-Associated Memory Impairment

NCT00355550
View directory record Official record
Conditions
Age-Associated Memory Impairment
Interventions
Tricaprilin, Placebo
Drug · Other
Lead sponsor
Cerecin
Industry
Eligibility
50 Years to 85 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
6
States / cities
Brooksville, Florida • DeLand, Florida • Naples, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2020 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Beta-Alanine on Heart Rate Response

NCT01745016
View directory record Official record
Conditions
Exercise, Fatigue
Interventions
Placebo, Beta-alanine
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Oct 3, 2026, 4:35 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

L. Acidophilus (Strain TW01) on Gut Health, Body Composition, and Inflammation

NCT06912100
View directory record Official record
Conditions
Overweight (BMI > 25), Obese, Otherwise Healthy Volunteers
Interventions
Placebo, Probiotic
Dietary Supplement
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 60 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 3, 2026, 4:35 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

A Randomized Double Blind, Placebo Controlled Clinical Study Evaluating the Efficacy and Safety of Magnesium Supplementation on Relaxation in Adults

NCT07029607
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Dietary Supplement with actives
Dietary Supplement
Lead sponsor
Olly, PBC
Industry
Eligibility
18 Years to 50 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Jun 19, 2025 · Synced Oct 3, 2026, 4:35 PM EDT
Recruiting Not applicable Interventional

A Randomized, Triple-blind, Placebo-controlled Study to Evaluate the Effects of a Supplement on Nutrient Gaps and Gut Health Among Individuals Utilizing GLP-1 RAs

NCT07437911
View directory record Official record
Conditions
Nutrition Intake, Nutrition Status, Gastrointestinal Microbiome, GLP-1
Interventions
AG1 - Nutritional Supplement, Placebo
Dietary Supplement
Lead sponsor
Athletic Greens International
Industry
Eligibility
18 Years to 59 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Phase 1 Interventional

Collagen-targeted Positron Emission Tomography (PET) Imaging for Assessment of EGCG Effect

NCT06265532
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
EGCG 300 mg, Placebo for EGCG 300 mg, EGCG 600 mg, Placebo for EGCG 600 mg
Drug
Lead sponsor
Hal Chapman
Other
Eligibility
40 Years to 85 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
3
States / cities
Boston, Massachusetts • Ann Arbor, Michigan • Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Whey Protein, Resistance Training, and Changes in Body Composition

NCT01186536
View directory record Official record
Conditions
Obesity
Interventions
Whey Protein supplement, Soy Protein Supplement, Carbohydrate supplement
Dietary Supplement
Lead sponsor
University of Kansas
Other
Eligibility
18 Years to 30 Years
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
1
States / cities
Lawrence, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 9, 2012 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of "Nicotinamide Mononucleotide" (NMN) on Cardiometabolic Function

NCT03151239
View directory record Official record
Conditions
Glucose Metabolism Disorders
Interventions
NMN supplement, Placebo
Dietary Supplement · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
55 Years to 75 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 14, 2021 · Synced Oct 3, 2026, 4:35 PM EDT
Terminated Phase 2 Interventional Results available

MemoryXL Effects on Mild Cognitive Impairment Patients

NCT00903695
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Memory XL, placebo
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
55 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jan 26, 2012 · Synced Oct 3, 2026, 4:35 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 3, 2020 · Synced Oct 3, 2026, 4:35 PM EDT
Recruiting Not applicable Interventional

Terraflora Daily Care and Gastrointestinal Health

NCT07355634
View directory record Official record
Conditions
Gastrointestinal
Interventions
Synbiotic Dietary Supplement, Placebo
Dietary Supplement
Lead sponsor
OvationLab
Network
Eligibility
25 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Oct 3, 2026, 4:35 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Rapid BAC Reduction with Nutraceutical Blend Study

NCT06722898
View directory record Official record
Conditions
Alcohol Consumption, Alcohol, Hangover Symptoms, NAC, Veisalgia
Interventions
Supplement, Placebo
Dietary Supplement
Lead sponsor
Medical Life Care Planners, LLC
Other
Eligibility
21 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Oct 3, 2026, 4:35 PM EDT
Not yet recruiting Phase 4 Interventional

Impact of Probiotics on Gut Microbiome During Antibiotic Prophylaxis in Elective Orthopedic Surgery

NCT06791993
View directory record Official record
Conditions
Dysbiosis, Gut -microbiota, Microbiome Analysis, Probiotic, Antibiotic Prophylaxis
Interventions
Placebo Capsule, Probiotic with Human Milk Oligosaccharides (HMO)
Drug · Dietary Supplement
Lead sponsor
Acibadem Maslak Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 24, 2025 · Synced Oct 3, 2026, 4:35 PM EDT
Terminated Not applicable Interventional

Muscle, Essential Amino Acids, and eXercise in Heart Failure

NCT03312387
View directory record Official record
Conditions
Heart Failure, Diastolic
Interventions
Exercise, Essential Amino Acids, Placebo
Other · Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
60 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
2
States / cities
Phoenix, Arizona • Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 3, 2019 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Use of a Probiotic Supplement to Prevent Asthma in Infants

NCT00113659
View directory record Official record
Conditions
Asthma
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
Montefiore Medical Center
Other
Eligibility
1 Day to 4 Days
Enrollment
203 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2014
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 11, 2024 · Synced Oct 3, 2026, 4:35 PM EDT
Completed Phase 2 Interventional

A Clinical Trial of a Vitamin/Nutriceutical Formulation for Alzheimer's Disease

NCT01320527
View directory record Official record
Conditions
Alzheimer's Disease, Mild Cognitive Impairment
Interventions
Nutriceutical formulation, Placebo
Dietary Supplement · Other
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
40 Years and older
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
8
States / cities
Naples, Florida • Baltimore, Maryland • Ayer, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2016 · Synced Oct 3, 2026, 4:35 PM EDT
Not listed Phase 4 Interventional

Placebo Controlled Study Using Lovaza as Treatment for Non-Alcoholic Fatty Liver Disease

NCT00941642
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease
Interventions
Lovaza, placebo control
Drug
Lead sponsor
Huntington Medical Research Institutes
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Pasadena, California
Source: ClinicalTrials.gov public record
Updated Jun 10, 2010 · Synced Oct 3, 2026, 4:35 PM EDT