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

Multiple Daily Condensed Tannin Supplementation and Iron Bioavailability: The Tannin Dose Response Trial

NCT03030716
View directory record Official record
Conditions
Iron Deficiency Anemia, Iron-deficiency
Interventions
95% condensed proanthocyanidins from grape seed extract
Dietary Supplement
Lead sponsor
Kansas State University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Manhattan, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 24, 2017 · Synced Sep 15, 2026, 2:19 AM 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 15, 2026, 2:19 AM EDT
Completed Not applicable Interventional

Study of the Cardiovascular Vitamin, CardioLife

NCT02088307
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
CardioLife
Dietary Supplement
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 90 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 21, 2016 · Synced Sep 15, 2026, 2:19 AM EDT
Terminated Phase 1 Interventional

Safety and Efficacy of Anti-Oxidants and Anti-inflammatory Agents in Glaucoma and Diabetic Retinopathy

NCT02984813
View directory record Official record
Conditions
Open-angle Glaucoma, Diabetic Retinopathy
Interventions
GlaucoHealth, GlaucoSelect, Placebo
Drug
Lead sponsor
The New York Eye & Ear Infirmary
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 16, 2021 · Synced Sep 15, 2026, 2:19 AM EDT
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 15, 2026, 2:19 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

GRAPE • Glycemic Response of Amylopectin Containing Drinks

NCT03916692
View directory record Official record
Conditions
Glycemic Index
Interventions
Carbohydrate drink, Energy smart Carbohydrate blend, Liquid Dextrose
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
30 Years to 55 Years · Male only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 7, 2022 · Synced Sep 15, 2026, 2:19 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 15, 2026, 2:19 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 15, 2026, 2:19 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Effect of Pterostilbene on Cholesterol, Blood Pressure and Oxidative Stress

NCT01267227
View directory record Official record
Conditions
Hyperlipidemia, Blood Pressure, Oxidative Stress
Interventions
Pterostilbene 50 mg twice daily, Placebo, Grape Extract, Pterostilbene 125 mg twice daily
Drug
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years to 88 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Jan 9, 2018 · Synced Sep 15, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Purple Grape Juice Study

NCT00551746
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Purple Grape Juice
Dietary Supplement
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Murray, Utah
Source: ClinicalTrials.gov public record
Updated Sep 15, 2011 · Synced Sep 15, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Grape Polyphenol Kinetics in Humans

NCT01751750
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Grape
Other
Lead sponsor
Janet Novotny
Federal
Eligibility
Up to 59 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated May 24, 2017 · Synced Sep 15, 2026, 2:19 AM EDT
Completed Phase 3 Interventional

Randomized Trial of a Nutritional Supplement in Alzheimer's Disease

NCT00678431
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Resveratrol with Glucose, and Malate, Placebo
Dietary Supplement
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
50 Years to 90 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Nov 14, 2012 · Synced Sep 15, 2026, 2:19 AM EDT
Completed Not applicable Interventional Results available

The BRAINFOOD Trial to Prevent Recurrent Hepatic Encephalopathy.

NCT04675775
View directory record Official record
Conditions
Cirrhosis, Ascites, Liver Diseases, Frailty, Sarcopenia, Hepatic Encephalopathy
Interventions
Medically-tailored meals (MTM), Protein supplements, Nutrition education handout
Other · Dietary Supplement · Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 5, 2024 · Synced Sep 15, 2026, 2:19 AM EDT
Terminated Phase 1 Interventional

AGE Levels in ER+ Metastatic Breast Cancer Patients Receiving Endocrine Therapy

NCT03092635
View directory record Official record
Conditions
Breast Cancer
Interventions
OPC
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 5, 2025 · Synced Sep 15, 2026, 2:19 AM EDT
Terminated Not applicable Interventional

Vision Preservation and Restoration Following a 6 Month Trial of GlaucoCetin

NCT04784234
View directory record Official record
Conditions
Primary Open Angle Glaucoma
Interventions
GlaucoCetin, Placebo
Dietary Supplement · Other
Lead sponsor
Wills Eye
Other
Eligibility
40 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Sep 15, 2026, 2:19 AM EDT
Completed Phase 1 Interventional

Physiological Effects of Grape Seed Extract in Diastolic Heart Failure

NCT01185067
View directory record Official record
Conditions
Diastolic Heart Failure, Hypertensive Heart Disease, Heart Failure With Preserved Ejection Fraction, Hypertension, Oxidative Stress
Interventions
grape seed extract (MegaNatural BP, Polyphenolics, Inc.)
Drug
Lead sponsor
University of Michigan
Other
Eligibility
50 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 5, 2017 · Synced Sep 15, 2026, 2:19 AM EDT
Terminated Phase 2 Interventional

Phase 2 Study to Examine Grape Seed Extract as an Anti-Oligomerization Agent in Alzheimer's Disease (AD)

NCT02033941
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Meganatural-Az Grapeseed Extract, Placebo
Drug
Lead sponsor
Hillel Grossman
Other
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 14, 2024 · Synced Sep 15, 2026, 2:19 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 15, 2026, 2:19 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Metabolism of Bioactive Dietary Polyphenol Preparation (BDPP)

NCT04421079
View directory record Official record
Conditions
Healthy Control
Interventions
Trans-resveratrol, Concord grape juice, Grape seed polyphenol extract, Placebo
Dietary Supplement · Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 55 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 2, 2025 · Synced Sep 15, 2026, 2:19 AM EDT
Completed Phase 2 Interventional Results available

Postoperative Ibuprofen and the Risk of Bleeding After Tonsillectomy With or Without Adenoidectomy

NCT01605903
View directory record Official record
Conditions
Tonsillectomy, Adenoidectomy
Interventions
Ibuprofen, Acetaminophen
Drug
Lead sponsor
Massachusetts Eye and Ear Infirmary
Other
Eligibility
2 Years to 18 Years
Enrollment
741 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
5
States / cities
San Diego, California • Boston, Massachusetts • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2018 · Synced Sep 15, 2026, 2:19 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 15, 2026, 2:19 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Synergy Between Choline and DHA

NCT03194659
View directory record Official record
Conditions
Pregnancy
Interventions
Choline
Dietary Supplement
Lead sponsor
Cornell University
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 15, 2026, 2:19 AM 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 15, 2026, 2:19 AM EDT
Completed Not applicable Interventional

A Study of Grape Seed Extract in Asymptomatic Non-Metastatic Prostate Cancer Patients With Rising PSA

NCT03087903
View directory record Official record
Conditions
Prostate Cancer
Interventions
Grape Seed Extract
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 99 Years · Male only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
2
States / cities
Aurora, Colorado • Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced Sep 15, 2026, 2:19 AM EDT