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Showing 1–21 of 21 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Grape Powder Placebo Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Whole-grape Powder on Body Composition, Fat and Bone Serum Biomarkers in Postmenopausal Women

NCT01717820
View directory record Official record
Conditions
Obesity
Interventions
Freeze-dried whole-grape powder
Dietary Supplement
Lead sponsor
Texas Woman's University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Denton, Texas
Source: ClinicalTrials.gov public record
Updated Oct 30, 2012 · Synced Sep 6, 2026, 2:34 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Prebiotic Effects of California Grapes on Gut Health and Cardiometabolic Health in Overweight Men and Women

NCT06544954
View directory record Official record
Conditions
Arterial Stiffness, Blood Pressure, Dysbiosis, Inflammation, Permeability; Increased
Interventions
Freeze-dried grape powder, Placebo powder
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 6, 2026, 2:34 PM EDT
Recruiting Not applicable Interventional

Effects of Grape Consumption on the Immune-Gut Axis in Obesity

NCT07231484
View directory record Official record
Conditions
Obesity &Amp; Overweight
Interventions
Freeze-dried grape powder, Placebo powder
Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 60 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects Grapes on Health Indices

NCT01674231
View directory record Official record
Conditions
Obesity, Inflammation, Cardiovascular Disease, Oxidative Stress
Interventions
Grape in the form of freeze-dried whole grape powder, Grape powder placebo
Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Phase 2 Interventional

Impact of Grape Consumption on Brain Metabolism and Neuropsychological Performance Over 1 Year

NCT03361410
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Grape Powder, Placebo Powder
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
65 Years to 85 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 20, 2023 · Synced Sep 6, 2026, 2:34 PM EDT
Recruiting Phase 1Phase 2 Interventional

Anthocyanin-Rich Table Grape Powder for Prophylaxis of Post-Operative Atrial Fibrillation

NCT05991700
View directory record Official record
Conditions
Post-operative Atrial Fibrillation (POAF)
Interventions
Freeze-Dried California Table Grape, Placebo
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 79 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 6, 2026, 2:34 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Cardioprotective Effects of Freeze Dried Grape Powder on Blood Pressure and Plasma Lipids/Lipoproteins

NCT03659695
View directory record Official record
Conditions
Cardiovascular Risk Factor
Interventions
Grape Powder, Placebo Powder
Dietary Supplement
Lead sponsor
University of Arizona
Other
Eligibility
30 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 14, 2024 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metabolic Response to Chardonnay Grape Marc Powder

NCT03203915
View directory record Official record
Conditions
Dyslipidemia, Obesity
Interventions
Chardonnay grape marc marc high polyphenol dose (120mg), Chardonnay grape marc powder low polyphenol dose (75mg), Placebo (0mg)
Dietary Supplement
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
35 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jul 15, 2021 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Circadian Modulation of Grape Consumption and Oxidative Stress Response

NCT05873530
View directory record Official record
Conditions
Oxidative Stress
Interventions
Grape
Other
Lead sponsor
Idaho State University
Other
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Pocatello, Idaho
Source: ClinicalTrials.gov public record
Updated May 23, 2023 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Microbiota Diversity and Composition and Polyphenol Bioavailability

NCT02677649
View directory record Official record
Conditions
Fecal Microbiota
Interventions
cranberry, placebo
Other
Lead sponsor
Tufts University
Other
Eligibility
20 Years to 55 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 22, 2017 · Synced Sep 6, 2026, 2:34 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 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Anti-Inflammatory Activities of Grapes in Humans at Risk for Cardiovascular Disease

NCT01443884
View directory record Official record
Conditions
Obesity, Inflammation
Interventions
Grape powder, followed by placebo powder, Placebo powder followed by grape powder
Dietary Supplement
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
20 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2011 · Synced Sep 6, 2026, 2:34 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Grape Impact on Human Gut Microbiome

NCT07797803
View directory record Official record
Conditions
Gut Microbiomes
Interventions
Grape Powder, Placebo Powder
Dietary Supplement · Other
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
45 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional

Nutritional Supplementation in Cognitive Aging

NCT00599508
View directory record Official record
Conditions
Cognitive Aging
Interventions
Concord grape juice, placebo juice, blueberry juice, whole fruit blueberry powder, berry placebo powder
Dietary Supplement
Lead sponsor
University of Cincinnati
Other
Eligibility
66 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 9, 2016 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Freeze-Dried Whole Grape Powder on Chronic Disease and Cardiovascular Risk Factors-a Pilot Study

NCT06006182
View directory record Official record
Conditions
Healthy People
Interventions
Grape Powder
Other
Lead sponsor
California State Polytechnic University, Pomona
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Pomona, California
Source: ClinicalTrials.gov public record
Updated Jul 18, 2024 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Influence of Daily Grapes Intake on Sarcopenia in Postmenopausal Women

NCT05863507
View directory record Official record
Conditions
Sarcopenia
Interventions
Grape powder supplementation, Placebo
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
60 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 11, 2024 · Synced Sep 6, 2026, 2:34 PM 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 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional

Effects of a Standardized Freeze-dried Grape Powder on High Density Lipoprotein (HDL) Function in Metabolic Syndrome

NCT02542176
View directory record Official record
Conditions
Metabolic Syndrome X
Interventions
Freeze-dried Whole Grape Powder, Grape Powder Placebo
Other
Lead sponsor
University of Connecticut
Other
Eligibility
30 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 22, 2018 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Mirtoselect®, Virtiva®, and Enovita® on Cognitive Performance and Mood States

NCT06309914
View directory record Official record
Conditions
Mental Processes, Cognitive Change, Mood Change
Interventions
Placebo, Enovita Grape Seed Extract, Mirtoselect Bilberry Extract, Virtiva Plus Ginko Biloba Extract
Dietary Supplement
Lead sponsor
Applied Science & Performance Institute
Industry
Eligibility
25 Years to 55 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jul 29, 2024 · Synced Sep 6, 2026, 2:34 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Antibiotics Versus Placebo in the Treatment of Abscesses in the Emergency Department

NCT00867789
View directory record Official record
Conditions
Abscess
Interventions
Trimethoprim-sulfamethoxazole, Sugar pill
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
3 Months to 17 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 25, 2021 · Synced Sep 6, 2026, 2:34 PM EDT
Completed Phase 1 Interventional

Impact of Grape Consumption on Brain Metabolism and Cognitive Function

NCT01573611
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Grape Powder, Placebo Powder
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
65 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 3, 2014 · Synced Sep 6, 2026, 2:34 PM EDT