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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Grape extract Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Acute Dietary Supplementation With Grape Seed Extract on Aortic Stiffness, Arterial Pressure, and Blood Vessel Dilation in Collegiate Obese Individuals at Rest

NCT04389060
View directory record Official record
Conditions
Obesity
Interventions
Grape seed extract
Dietary Supplement
Lead sponsor
California Baptist University
Other
Eligibility
18 Years to 29 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Riverside, California
Source: ClinicalTrials.gov public record
Updated May 14, 2020 · Synced Sep 10, 2026, 3:34 AM 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 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Acute Grape Seed Extract Supplementation on the Heart Rate Recovery in Young Individuals

NCT07137988
View directory record Official record
Conditions
Healthy Young Men
Interventions
600 mg grape seed extract, 600 mg Starch
Dietary Supplement
Lead sponsor
California Baptist University
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Riverside, California
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Chronic Dietary Grape Seed Extract Supplementation on Aortic Stiffness and Hemodynamic Responses to Exercise in Obese Males

NCT04465110
View directory record Official record
Conditions
Obesity Adult Onset
Interventions
Grape Seed Extract
Dietary Supplement
Lead sponsor
California Baptist University
Other
Eligibility
18 Years to 29 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Riverside, California
Source: ClinicalTrials.gov public record
Updated Jul 12, 2020 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Resveratrol for Improved Performance in the Elderly

NCT01126229
View directory record Official record
Conditions
Memory
Interventions
Placebo, Low dose Resveratrol, High dose Resveratrol
Dietary Supplement · Drug
Lead sponsor
University of Florida
Other
Eligibility
65 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 10, 2013 · Synced Sep 10, 2026, 3:34 AM EDT
Not listed Not applicable Interventional

Diabetic Retinopathy Functional Evaluation Study: Monitoring Carotenoid Vitamins Treatment Using ERG

NCT04117022
View directory record Official record
Conditions
Diabetes, Diabetic Retinopathy
Interventions
DVS supplementation
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
21 Years to 80 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Pomona, California • Tahlequah, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 22, 2021 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Grape Seed Extract on Estrogen Levels of Postmenopausal Women

NCT00566553
View directory record Official record
Conditions
Breast Cancer
Interventions
Grape Seed Extract
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
55 Years to 75 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 5, 2012 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

IH636 Grape Seed Extract in Preventing Breast Cancer in Postmenopausal Women at Risk of Developing Breast Cancer

NCT00100893
View directory record Official record
Conditions
Breast Cancer
Interventions
IH636 grape seed proanthocyanidin extract
Dietary Supplement
Lead sponsor
City of Hope Medical Center
Other
Eligibility
40 Years to 75 Years · Female only
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Jun 7, 2015 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Phase 1 Interventional

Clinical Trial to Evaluate the Safety of PT150 (Formerly ORG34517) When it is Taken Concurrently With Alcohol

NCT03548714
View directory record Official record
Conditions
Alcohol Dependence, Alcohol Interaction
Interventions
PT150, Beverage
Drug · Other
Lead sponsor
Pop Test Oncology LLC
Industry
Eligibility
21 Years to 64 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarillo Warnings Image Sorting Study

NCT05838378
View directory record Official record
Conditions
Smoking, Cigar
Interventions
Package image sorting with pictorial warnings, Package image sorting with Surgeon General text-only warnings, Package image sorting with FDA text-only warnings
Other
Lead sponsor
Boston University
Other
Eligibility
21 Years to 35 Years
Enrollment
764 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Sep 10, 2026, 3:34 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Freeze-dried Grape Powder on Immune Profiles in Healthy Aging Adults

NCT07079982
View directory record Official record
Conditions
Healthy Aging, Inflammation
Interventions
Freeze-dried whole grape powder, Control grape-free powder
Other
Lead sponsor
University of Connecticut
Other
Eligibility
50 Years to 75 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Increasing the Variety of Vegetables and Fruits Served to Preschool Children at a Snack

NCT01557218
View directory record Official record
Conditions
Obesity, Feeding Behaviors
Interventions
Cucumber snack, Pepper snack, Tomato snack, Vegetable variety snack, Apple snack, Peach snack, Pineapple snack, Fruit variety snack
Other
Lead sponsor
Penn State University
Other
Eligibility
3 Years to 6 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 14, 2013 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Grape Juice With Breakfast on Glycemia and Cognitive Function in Healthy Adults

NCT03409497
View directory record Official record
Conditions
Glycemic Response, Appetitive Behavior
Interventions
Concord Grape Juice, Low flavonoid low essence beverage, Low flavonoid beverage
Other
Lead sponsor
Purdue University
Other
Eligibility
25 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 4, 2020 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional

Effect of Grapes in Inflammatory Bowel Disease

NCT05972694
View directory record Official record
Conditions
Crohn Disease
Interventions
Freeze dried grape powder
Dietary Supplement
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Red Wine and White Wine on Blood Estrogen and Progesterone Levels

NCT00572351
View directory record Official record
Conditions
Healthy
Interventions
Red Wine, White Wine
Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
21 Years and older · Female only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 22, 2019 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Acute Grape Seed Extract Supplementation on Muscle Metaboreflex in Healthy Young Individuals

NCT05945771
View directory record Official record
Conditions
Dietary Supplementation
Interventions
Grape seed extract
Dietary Supplement
Lead sponsor
California Baptist University
Other
Eligibility
18 Years to 30 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Riverside, California
Source: ClinicalTrials.gov public record
Updated Jul 13, 2023 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Phase 1Phase 2 Interventional

Development of a Polyphenol-rich Dietary Preparation for Treating Veterans With Gulf War Illness

NCT02915237
View directory record Official record
Conditions
Gulf War Illness
Interventions
Concord grape juice, Placebo Beverage
Dietary Supplement
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
East Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 28, 2020 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Phase 1 Interventional Results available

Purple Grape Juice in Improving Vascular Health in Childhood Cancer Survivors

NCT01043939
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Purple Grape Juice, Apple Juice
Other
Lead sponsor
University of Minnesota
Other
Eligibility
10 Years to 30 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 30, 2014 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Maternal Choline Intake on Choline Status and Health Biomarkers During Pregnancy and Lactation

NCT01127022
View directory record Official record
Conditions
Pregnancy, Lactation
Interventions
Choline Chloride
Dietary Supplement
Lead sponsor
Cornell University
Other
Eligibility
21 Years and older · Female only
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Sep 17, 2013 · Synced Sep 10, 2026, 3:34 AM EDT
Completed Early Phase 1 Interventional Results available

Muscadine Grape Extract to Improve Fatigue

NCT04495751
View directory record Official record
Conditions
Fatigue
Interventions
Muscadine grape extract, Placebo, Quality of Life Assessment, Questionnaires, Participant Feedback
Dietary Supplement · Drug · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
65 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 15, 2025 · Synced Sep 10, 2026, 3:34 AM 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 10, 2026, 3:34 AM 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 10, 2026, 3:34 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Laboratory Smoking of Marijuana "Blunts"

NCT03546790
View directory record Official record
Conditions
Cannabis
Interventions
Marijuana
Drug
Lead sponsor
Battelle Memorial Institute
Other
Eligibility
18 Years to 55 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 1, 2019 · Synced Sep 10, 2026, 3:34 AM 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 10, 2026, 3:34 AM EDT