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Showing 1–24 of 191 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo juice Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Beet-root Juice and PBM Treatments on Muscle Fatigue

NCT05596474
View directory record Official record
Conditions
Health Care Utilization, Healthy Aging
Interventions
Beet-root juice, red-light therapy, Placebo, sham light
Dietary Supplement · Radiation
Lead sponsor
Wake Forest University
Other
Eligibility
65 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Sep 3, 2026, 5:56 AM 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 3, 2026, 5:56 AM EDT
Recruiting Phase 2 Interventional

Neurovascular Transduction During Exercise in Chronic Kidney Disease

NCT02947750
View directory record Official record
Conditions
Renal Insufficiency, Chronic
Interventions
6R-BH4, 6R-BH4 placebo, Folic acid, Exercise training, Stretching, Histidine and beta-alanine supplementation, Histidine and beta-alanine placebo
Drug · Other · Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
3
States / cities
Atlanta, Georgia • Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

To Determine the Metabolomics and Microbiome Changes After Cranberry Juice Consumption Among Young Women

NCT02860468
View directory record Official record
Conditions
Healthy
Interventions
Cranberry juice, Placebo juice
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 29 Years · Female only
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 15, 2018 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Juice Plus+® Supplementation on Endothelial Function in Overweight Men

NCT01533987
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Juice Plus
Dietary Supplement
Lead sponsor
Griffin Hospital
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 15, 2012 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Study to Evaluate Effects of Sapropterin Dihydrochloride on QTc Intervals in Healthy Adult Subjects

NCT00789568
View directory record Official record
Conditions
Phenylketonuria
Interventions
sapropterin dihydrochloride, Moxifloxacin, Moxifloxacin placebo
Drug
Lead sponsor
BioMarin Pharmaceutical
Industry
Eligibility
18 Years to 50 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Sep 3, 2026, 5:56 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, 5:56 AM 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 3, 2026, 5:56 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effect of Noni Juice on Lipid Peroxidation-derived DNA Adducts in Heavy Smokers

NCT01677169
View directory record Official record
Conditions
DNA Damage
Interventions
Noni juice, Placebo
Dietary Supplement
Lead sponsor
Tahitian Noni International, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
317 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2006
U.S. locations
1
States / cities
Rockford, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 10, 2019 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of a Cranberry Beverage on Intestinal Permeability and Gastrointestinal Function in Generally Healthy Adults

NCT03957239
View directory record Official record
Conditions
Intestinal Permeability, Gastrointestinal Function
Interventions
Cranberry Beverage, Control Beverage
Other
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 50 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 6, 2020 · Synced Sep 3, 2026, 5:56 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Effects of Alcohol and Mood on Attention

NCT04276779
View directory record Official record
Conditions
Suicidal Ideas
Interventions
Alcohol administration, Placebo administration, Positive mood induction, Negative mood induction
Other · Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
21 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Sep 3, 2026, 5:56 AM EDT
Recruiting Phase 2 Interventional

Milk Thistle Clinical Trial in Pediatric NAFLD

NCT06477146
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease (NAFLD)
Interventions
Milk thistle (MT), Placebo, Lifestyle Modification, Fibroscan
Drug · Behavioral · Device
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
9 Years to 22 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Sep 3, 2026, 5:56 AM 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 3, 2026, 5:56 AM 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 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutritional Stimulation of Growth in Children With Short Stature

NCT04226586
View directory record Official record
Conditions
Nutritional Stunting, Growth Failure
Interventions
Essential Amino Acid (EAA) group, Placebo
Dietary Supplement
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
3 Years to 11 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

RCT of Mushroom Based Natural Product to Enhance Immune Response to COVID-19 Vaccination

NCT04951336
View directory record Official record
Conditions
COVID-19 Vaccination
Interventions
FoTv
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 16, 2025 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of 100% Orange Juice on Skin Health in Women

NCT04861623
View directory record Official record
Conditions
Skin Health
Interventions
Orange juice, Placebo juice (SunnyD)
Other
Lead sponsor
University of Florida
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

To Determine the Activity and Mechanisms of Cranberries to Attenuate Skin Photoaging and Improve Skin Health in Women

NCT04183920
View directory record Official record
Conditions
Skin Health
Interventions
Cranberry juice, Placebo juice
Other
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 15, 2024 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Phase 2 Interventional

Cranberry Juice for the Prevention of Recurrent Urinary Tract Infections

NCT00128128
View directory record Official record
Conditions
Urinary Tract Infections
Interventions
Cranberry juice cocktail
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 45 Years · Female only
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
2
States / cities
New Haven, Connecticut • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 3, 2015 · Synced Sep 3, 2026, 5:56 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Exercise Training Intensity and Nitrate Supplementation in Post-Menopausal Females

NCT06480695
View directory record Official record
Conditions
Menopause
Interventions
Nitrate-Rich Beetroot Juice, High Intensity Exercise, Moderate Intensity Exercise, Nitrate-Depleted Placebo Beetroot Juice
Dietary Supplement · Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
45 Years to 75 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of the Combination of Nitrate and Caffeine on Critical Power In Trained Male Cyclists

NCT07501806
View directory record Official record
Conditions
Exercise Performance of Fit Athletes, Exercise Performance, Cycling Performance
Interventions
Dietary Nitrate, Caffeine, Placebo
Dietary Supplement · Other
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 3, 2026, 5:56 AM 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 3, 2026, 5:56 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Bowman-Birk Inhibitor Concentrate in Preventing Cancer in Healthy Men

NCT00287833
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
placebo, Bowman-Birk inhibitor concentrate
Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 65 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 2, 2013 · Synced Sep 3, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Energy Drink Brands on Heart Rhythm

NCT03196908
View directory record Official record
Conditions
Electrical Alternation of Heart, Blood Pressure
Interventions
Energy Drink Brand 1, Energy Drink Brand 2, Placebo
Dietary Supplement · Other
Lead sponsor
University of the Pacific
Other
Eligibility
18 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Stockton, California
Source: ClinicalTrials.gov public record
Updated Dec 23, 2018 · Synced Sep 3, 2026, 5:56 AM EDT