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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
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition: Sub-Study II

NCT02710097
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active inhaled cannabis, Placebo, Active Oral Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy Long-term Dietary Nitrate Consumption to Plasma Nitrite Conversion

NCT05380167
View directory record Official record
Conditions
Cardiovascular Diseases in Old Age
Interventions
BRJ Nitrate, BRJ Placebo
Dietary Supplement
Lead sponsor
Wake Forest University
Other
Eligibility
40 Years to 80 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 24, 2022 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Pomegranate on Aging and Inflammation of the Skin

NCT02258776
View directory record Official record
Conditions
Skin Photoaging, Inflammation and Skin Pathogenic Bacteria
Interventions
Pomegranate Extract, Pomegranate Juice, Placebo
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
30 Years to 45 Years · Female only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 28, 2017 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Examining Validity and Sensitivity of Pressure-Mediated Reflection Spectroscopy

NCT04056624
View directory record Official record
Conditions
Dietary Habits, Diet, Healthy
Interventions
High carotenoid juice, Placebo control - Apple juice
Dietary Supplement
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 65 Years
Enrollment
162 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
3
States / cities
Minneapolis, Minnesota • Greenville, North Carolina • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2023 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 2Phase 3 Interventional

Cranberry Juice for Treatment of Urinary Tract Infections

NCT00093054
View directory record Official record
Conditions
Urinary Tract Infections
Interventions
Cranberry juice, Placebo cranberry juice
Drug · Dietary Supplement
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 40 Years · Female only
Enrollment
319 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 4, 2015 · Synced Sep 2, 2026, 6:45 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Cranberry Polyphenols and Stress Resilience During Multitasking in Healthy Adults

NCT07453537
View directory record Official record
Conditions
Stress Response, Mental Stress, Multitasking Behavior and Multitasking Ability, Physiological Stress, Cognitive Symptoms, Motor Activity
Interventions
Cranberry juice, Placebo juice
Other
Lead sponsor
University of Florida
Other
Eligibility
30 Years to 55 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Bowman-Birk Inhibitor Concentrate in Healthy Men

NCT00679094
View directory record Official record
Conditions
Healthy, no Evidence of Disease
Interventions
Bowman-Birk inhibitor concentrate, placebo, pharmacological study, laboratory biomarker analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 65 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 28, 2016 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cranberry Ingestion and Cycling Related Immunity and Inflammation

NCT05407701
View directory record Official record
Conditions
Inflammatory Response, Metabolic Disturbance, Immune Suppression
Interventions
Cranberry Juice, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
18 Years to 55 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 2 Interventional Results available

Cabergoline for Lactation Inhibition After Second-Trimester Abortion or Loss

NCT04701333
View directory record Official record
Conditions
Lactation Suppressed
Interventions
Cabergoline 1 MG, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older · Female only
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2024 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Assess the Synergistic Effects of a Cranberry Beverage on Cognitive Function

NCT05008549
View directory record Official record
Conditions
Attention, Mood
Interventions
Cranberry Juice Product
Dietary Supplement
Lead sponsor
Ocean Spray Cranberries, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 6, 2023 · Synced Sep 2, 2026, 6:45 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 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Leucine on Body Weight

NCT00683826
View directory record Official record
Conditions
Overweight, Obesity
Interventions
L-Leucine 8gr, Liquid meal, L-Leucine 4g
Dietary Supplement · Other
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 4, 2013 · Synced Sep 2, 2026, 6:45 AM EDT
Recruiting Not applicable Interventional

Nitric Oxide (NO) and Endothelial Dysfunction in Women With PTSD

NCT07485231
View directory record Official record
Conditions
Post Traumatic Stress Disorder, Trauma
Interventions
Beetroot Juice, Placebo Juice
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Polyphenols and Cognitive Decline

NCT06507254
View directory record Official record
Conditions
Cognitive Decline, Cognitive Dysfunction
Interventions
Polyphenol Supplement, Placebo Supplement
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impacts of Aronia on Inflammation and the Gut Microbiome

NCT04128839
View directory record Official record
Conditions
Metabolic Syndrome, Inflammation, Hypertriglyceridemia, Obesity
Interventions
Aronia berry juice, Sham comparator
Dietary Supplement · Other
Lead sponsor
Montana State University
Other
Eligibility
18 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Bozeman, Montana
Source: ClinicalTrials.gov public record
Updated Jan 15, 2024 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Loperamide Grapefruit Juice Interaction PK Trial

NCT00806299
View directory record Official record
Conditions
Drug Interaction
Interventions
Loperamide / Red Grapefruit Juice, Loperamide/ White Grapefruit Juice, Loperamide / Pink Grapefruit Juice
Drug
Lead sponsor
Johnson & Johnson Consumer and Personal Products Worldwide
Industry
Eligibility
18 Years to 59 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Oct 5, 2011 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 2 Interventional

Tart Cherry, Metabolic Syndrome, and Cardiovascular Risk

NCT02154100
View directory record Official record
Conditions
Metabolic Syndrome, Cardiovascular Diseases, Diabetes
Interventions
Tart Cherry, Placebo
Dietary Supplement
Lead sponsor
Florida State University
Other
Eligibility
20 Years to 60 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Dec 7, 2016 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Blood Pressure Lowering Effects of Grape Juice

NCT00302809
View directory record Official record
Conditions
Hypertension
Interventions
Concord Grape Juice
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
21 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 17, 2009 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 2 Interventional Results available

Nitrite Supplementation in Long COVID Patients

NCT05618574
View directory record Official record
Conditions
Long COVID, Cardiorespiratory Fitness
Interventions
140 ml per day of Beet-It nitrate beverage (James White Drinks Ltd., Ipswich, UK), 210 ml of nitrate-depleted placebo
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Acute Alcohol Intoxication on Neural Processes During Decisions to Engage in HIV Risk Behaviors

NCT04360018
View directory record Official record
Conditions
Alcohol Consumption
Interventions
Alcohol beverage, Placebo beverage
Other
Lead sponsor
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
NIH
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Evaluation of the Attenuation by Aes-103 of Hypoxia Mediated Decrements in Endurance Exercise Performance

NCT01871142
View directory record Official record
Conditions
Hypoxia
Interventions
Placebo, Aes-103
Drug
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 23, 2014 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effectiveness of Cranberry Ingestion on Bacterial Adhesion: An Adjunct Study

NCT00506025
View directory record Official record
Conditions
Asymptomatic Bacteriuria
Interventions
Cranberry Juice, De-Activated Cranberry juice
Dietary Supplement
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2017 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gum Acacia and Blood Glucose

NCT03716479
View directory record Official record
Conditions
Diet Modification
Interventions
Low Fiber, High Fiber, Placebo/Control
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 3, 2019 · Synced Sep 2, 2026, 6:45 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Beetroot Juice NO Cold Study

NCT06416228
View directory record Official record
Conditions
Respiratory Tract Infections, Cold Symptoms, Exhaled Nitric Oxide
Interventions
Beetroot juice
Dietary Supplement
Lead sponsor
Southern Methodist University
Other
Eligibility
18 Years to 30 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
2
States / cities
Dallas, Texas • Waco, Texas
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 2, 2026, 6:45 AM EDT