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Showing 1–24 of 233 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo drink Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Proprietary Water on Physiological and Perceptual Responses

NCT05451446
View directory record Official record
Conditions
Hydration, Dehydration
Interventions
proprietary water, Active comparator, Placebo
Dietary Supplement · Other
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 50 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 10, 2023 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Probiotic on the Innate and Adaptive Host Response to Rhinovirus (EPIARR)

NCT01669603
View directory record Official record
Conditions
Common Cold
Interventions
Bifidobacterium lactis Bl-04, Placebo, Rhinovirus
Dietary Supplement · Biological
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 60 Years
Enrollment
789 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 24, 2017 · Synced Sep 2, 2026, 2:04 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Acute Nitrate Supplementation on Vascular Function in Hispanic, Black and White Population

NCT05188079
View directory record Official record
Conditions
Healthy Adults
Interventions
Beetroot juice, Placebo drink
Dietary Supplement
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ergogenic Properties of Magnesium Supplementation

NCT05282693
View directory record Official record
Conditions
Exercise Performance, Gut -Microbiota, Mitochondrial Function
Interventions
ReMag, Placebo
Dietary Supplement
Lead sponsor
Christopher Bell
Other
Eligibility
18 Years to 40 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 2, 2026, 2:04 PM EDT
Recruiting Phase 3 Interventional

SMART Exercise for PAD

NCT06032065
View directory record Official record
Conditions
Peripheral Arterial Disease, Aging, Peripheral Vascular Diseases, Walking, Difficulty
Interventions
Supervised Treadmill Exercise, Home-Based Exercise, Nitrate-rich beetroot Juice
Behavioral · Dietary Supplement
Lead sponsor
Northwestern University
Other
Eligibility
50 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
3
States / cities
Chicago, Illinois • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Results available

Prazosin for Alcohol Dependence and Posttraumatic Stress Disorder

NCT01518972
View directory record Official record
Conditions
Alcohol Abuse, Posttraumatic Stress Disorder
Interventions
Prazosin, Placebo medication
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 24, 2020 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Yogurt Containing BB12 on Children's Health and Child Care Absenteeism

NCT00653705
View directory record Official record
Conditions
Children's Health and Growth, Childcare Absenteeism
Interventions
Yogurt drink with probiotic bacteria BB12, Placebo
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
12 Months to 48 Months
Enrollment
181 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 30, 2013 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Glucose and Motivation States

NCT07255183
View directory record Official record
Conditions
Motivation
Interventions
Exercise, Sugar Drink, Non-sugar beverage
Behavioral · Dietary Supplement
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional

Amino Acid Supplementation in Recovery From Severe Burns

NCT01618630
View directory record Official record
Conditions
Burn Injury
Interventions
EAA Supplementation + Exercise Training, Placebo + Exercise Training
Dietary Supplement
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
7 Years to 17 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 10, 2018 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessing the Safety and Efficacy of FSD-F2R6-A-CP in Volunteers in an Induced State of Alcohol Intoxication

NCT06505239
View directory record Official record
Conditions
Acute Alcohol Intoxication
Interventions
FSD-F2R6-A-CP, Placebo
Dietary Supplement
Lead sponsor
Quantum Biopharma
Industry
Eligibility
21 Years to 45 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Sep 2, 2026, 2:04 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition

NCT02404688
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active delta-9-THC, Placebo, Active Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Postnatal Choline Supplementation in Children With Prenatal Alcohol Exposure

NCT01149538
View directory record Official record
Conditions
Fetal Alcohol Spectrum Disorders, Fetal Alcohol Syndrome, Partial Fetal Alcohol Syndrome, Alcohol Related Neurodevelopmental Disorder, Prenatal Alcohol Exposure
Interventions
Choline bitartrate, Placebo for choline bitartrate
Drug · Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
2 Years to 5 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 18, 2016 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Live Microbials to Boost Anti-Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) Immunity Clinical Trial

NCT04847349
View directory record Official record
Conditions
Covid19
Interventions
OL-1, standard dose, OL-1, high dose, Placebo
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 60 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 31, 2022 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Determining the Ergogenic Effects of Carb10™ Supplementation on Carbohydrate-Rich and Carbohydrate-Restricted Diets

NCT03231514
View directory record Official record
Conditions
Ketogenic Dieting
Interventions
Carbohydrate Supplement (Carb10), Diet, Exercise
Dietary Supplement · Other
Lead sponsor
Texas Woman's University
Other
Eligibility
18 Years to 30 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Denton, Texas
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 2, 2026, 2:04 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Cannabis' Impact on Alcohol Consumption

NCT05389930
View directory record Official record
Conditions
Alcohol Drinking, Cannabis Use, Cannabis, Alcohol Use Disorder
Interventions
THC-dominant cannabis, CBD-dominant cannabis, Cannabis placebo, Alcohol, Alcohol placebo
Drug
Lead sponsor
Brown University
Other
Eligibility
21 Years to 50 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 5, 2024 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Inorganic Nitrate and Intensity of Exercise on Cardiovascular Health in Post-Menopausal Females

NCT05221905
View directory record Official record
Conditions
Vascular Dilation, Arterial Stiffness
Interventions
BEET IT - Concentrate Beet root juice, BEET IT - Concentrate Beet root juice (nitrate depleted)
Drug
Lead sponsor
University of Virginia
Other
Eligibility
45 Years to 75 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessing Fermentability of a Dietary Fiber

NCT01497249
View directory record Official record
Conditions
Nutritional Intervention
Interventions
A dietary fiber (FCHO), Placebo
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Supplementation Trial on Arginine With Metabolic Profiling

NCT03409380
View directory record Official record
Conditions
Protein, Amino Acid, Arginine
Interventions
Arginine Drink, Plain Drink
Dietary Supplement
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 39 Years · Male only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 13, 2022 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cannabis Impairment Detection Application (CIDA)

NCT04230460
View directory record Official record
Conditions
Driving Under the Influence, Marijuana Intoxication, Alcohol Intoxication
Interventions
Cannabis (THC) (Inhaled) Placebo, Cannabis (High% THC) (Inhaled), Cannabis (Very High% THC) (Inhaled), Alcohol (oral)
Drug
Lead sponsor
Advanced Brain Monitoring, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 11, 2021 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Not applicable Interventional

Effect of Revival Soy on Fibromyalgia Pain

NCT00279942
View directory record Official record
Conditions
Fibromyalgia
Interventions
Soy, Placebo
Dietary Supplement · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 76 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 5, 2012 · Synced Sep 2, 2026, 2:04 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Grape Powder on Psychological Distress and Gut Microbiota in College Students

NCT07214428
View directory record Official record
Conditions
Gut Microbiota, Psychological Distress
Interventions
freeze-dried table grape powder, Placebo
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 30 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 2, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Milk Protein Feeding After Aerobic Exercise in Older Adults With Pre-diabetes Taking the Biguanide Metformin

NCT02552355
View directory record Official record
Conditions
Physical Activity
Interventions
Metformin, Placebo, Carbohydrate Beverage, Protein Beverage
Drug · Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
55 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 29, 2019 · Synced Sep 2, 2026, 2:04 PM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers Results available

Vascular Dysfunction in Black Individuals: Roles of Nitric Oxide and Endothelin-1

NCT04770155
View directory record Official record
Conditions
Vascular Function, Racial Disparity
Interventions
Dietary Nitrates 400 mg, L-citrulline 3 g, Sildenafil 100 mg, Bosentan 125 mg
Dietary Supplement · Drug
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years to 40 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Oct 30, 2023 · Synced Sep 2, 2026, 2:04 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Alcohol and Bariatric Surgery

NCT02766322
View directory record Official record
Conditions
Obesity
Interventions
Oral Alcohol challenge test Alcohol visit first, Oral Alcohol challenge test Placebo visit first, Intravenous Alcohol Challenge Test (Clamp), Intravenous Alcohol Self-administration Test
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
21 Years to 64 Years · Female only
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Sep 2, 2026, 2:04 PM EDT