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ClinicalTrials.gov public records Last synced Oct 21, 2026, 2:55 PM EDT

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Showing 1–24 of 48 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Polyphenol Capsules Clear all
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 11, 2013 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Results available

Effects of Botanical Microglia Modulators in Gulf War Illness

NCT02909686
View directory record Official record
Conditions
Gulf War Illness
Interventions
Boswellia Serrata, Curcumin, Epimedium, Fisetin, Luteolin, Nettle, Pycnogenol, Reishi Mushroom, Resveratrol, Placebo
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
39 Years to 65 Years · Male only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 24, 2025 · Synced Oct 21, 2026, 2:55 PM EDT
Terminated Phase 2 Interventional Results available

Green Tea Extract in Treating Patients With Low-Risk Prostate Cancer

NCT01928485
View directory record Official record
Conditions
Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer
Interventions
active surveillance, Sunphenon, laboratory biomarker analysis, Questionnaire Administration
Other · Drug
Lead sponsor
Sanjay Gupta PhD
Other
Eligibility
45 Years to 85 Years · Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 22, 2020 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 2 Interventional Results available

Green Tea Extract and Prostate Cancer

NCT00676780
View directory record Official record
Conditions
Prostate Cancer
Interventions
Polyphenon E (EGCG)
Drug
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 8, 2012 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Flavanol Absorption, Metabolism and Excretion From Fruit-based Drinks and Other Food Matrixes

NCT03526094
View directory record Official record
Conditions
Healthy
Interventions
Flavanols-capsules, Flavanol-banana blend, Flavanol-high protein drink, Flavanol-berry blend, Flavanol-sports drink, Flavanol-peanut butter toast, Flavanol-oats, Flavanol-yogurt, II- Flavanol drink, II- Flavanol drink + banana blend
Other
Lead sponsor
University of California, Davis
Other
Eligibility
25 Years to 60 Years · Male only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
2
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Oct 10, 2022 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional

Resveratrol in Metabolic Syndrome: Effect on Platelet Hyper-reactivity and HDL Lipid Peroxidation

NCT02219906
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Resveratrol, Placebo
Dietary Supplement
Lead sponsor
Vanderbilt University
Other
Eligibility
30 Years to 75 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Nashville, Tennessee • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 19, 2019 · Synced Oct 21, 2026, 2:55 PM 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 11, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness of a Butyrate Formulation and Butyrate + Polyphenol Formulation on Gut Health, Permeability and Associated Symptoms

NCT06419231
View directory record Official record
Conditions
Gut Health
Interventions
Butyrate Formulation, Butyrate + Polyphenol Formulation, Placebo
Dietary Supplement
Lead sponsor
Supplement Formulators, Inc.
Industry
Eligibility
21 Years to 70 Years
Enrollment
143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Exercise, Milk Thistle, and Lactobacillus to Influence Plasma Bilirubin

NCT04717726
View directory record Official record
Conditions
Obesity
Interventions
Milk Thistle (MT), Lactobacillus Gasseri (LAC), Exercise (EX), Control (CON)
Dietary Supplement · Behavioral
Lead sponsor
Kyle Flack
Other
Eligibility
18 Years to 50 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 28, 2023 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Aronia Berries on Vascular Endothelial Function and the Gut Microbiota in Middle-Aged/Older Adults

NCT03824041
View directory record Official record
Conditions
Endothelial Dysfunction, Aging
Interventions
Aronia full spectrum - half dose, Aronia full spectrum - full dose, Placebo
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
45 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 3, 2023 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 2 Interventional Results available

Cognitive Impact of Pomegranate Polyphenols Following Ischemic Stroke

NCT02442804
View directory record Official record
Conditions
Stroke
Interventions
POMx, Placebo
Dietary Supplement · Other
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 89 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Oct 21, 2026, 2:55 PM EDT
Terminated Phase 2 Interventional Results available

Randomized Proof-of-Concept Trial to Evaluate the Safety and Explore the Effectiveness of Resveratrol, a Plant Polyphenol, for COVID-19

NCT04400890
View directory record Official record
Conditions
COVID-19
Interventions
Resveratrol, Vitamin D3
Drug · Dietary Supplement
Lead sponsor
Marvin McCreary, MD
Other
Eligibility
45 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 24, 2023 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Resveratrol to Enhance Vitality and Vigor in Elders

NCT02123121
View directory record Official record
Conditions
Mitochondrial Function, Physical Function
Interventions
Resveratrol 1000 mg/day, Resveratrol 1500 mg/day, Vegetable cellulose, All groups
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
65 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 26, 2024 · Synced Oct 21, 2026, 2:55 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 30, 2024 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Pomegranate Extract and Memory

NCT01950221
View directory record Official record
Conditions
Healthy Volunteers
Interventions
POMx, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years to 75 Years
Enrollment
212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 2, 2020 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional

Curcumin, Resveratrol, and Stinging Nettle as Treatments for GWI

NCT05377242
View directory record Official record
Conditions
Gulf War Illness
Interventions
Curcumin, Resveratrol, Stinging Nettle
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
45 Years and older
Enrollment
390 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Polyphenol Rich Supplementation on Markers of Recovery From Intense Resistance Exercise

NCT03540602
View directory record Official record
Conditions
Muscle Soreness
Interventions
Tart Cherry, Placebo Oral Capsule [CEBOCAP]
Dietary Supplement · Other
Lead sponsor
Jacksonville University
Other
Eligibility
21 Years to 45 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Oct 21, 2026, 2:55 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Resveratrol Supplementation on Exercise Performance and Recovery

NCT06723119
View directory record Official record
Conditions
Effect of Resveratrol on Performance and Recovery
Interventions
Resveratrol (VRES) 500 mg oral once daily., Placebo 500 mg oral once daily.
Other
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Oct 21, 2026, 2:55 PM EDT
Recruiting Phase 2 Interventional

RESvEraTrol in Parkinson's Disease (RESET)

NCT07592767
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Trans-Resveratrol
Drug
Lead sponsor
Georgetown University
Other
Eligibility
55 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Sep 18, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Oral Pomegranate Extract on the Microbiome and Skin Biophysical Properties

NCT04596722
View directory record Official record
Conditions
Human Microbiome
Interventions
Pomella, Placebo
Dietary Supplement · Other
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
25 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2021 · Synced Oct 21, 2026, 2:55 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Strength Training and Resveratrol

NCT06585865
View directory record Official record
Conditions
Sarcopenia, Anabolic Resistance
Interventions
Resistance training, Resveratrol 500 mg oral once daily., Placebo
Behavioral · Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
60 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Results available

Pilot Study of Resveratrol in Older Adults With Impaired Glucose Tolerance

NCT01375959
View directory record Official record
Conditions
Impaired Glucose Tolerance
Interventions
resveratrol, Placebo
Dietary Supplement · Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
50 Years to 80 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 26, 2022 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional

Novel Dietary Interventions for Treating Insulin Resistance

NCT02006394
View directory record Official record
Conditions
Insulin Resistance, Obesity, Metabolic Syndrome
Interventions
Fish Oil, Polyphenol Capsules, Corn Oil Capsules, Corn starch capsules, Reduced glycemic index bread products, Market variety bread products
Dietary Supplement · Other
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 55 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 12, 2013 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acute Effects of Grape Seed Extract on Insulin Sensitivity and Oxidative Stress and Inflammation Markers.

NCT01995643
View directory record Official record
Conditions
Polyphenolic Compounds and Metabolism
Interventions
Active Capsule, Placebo Capsule
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
20 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 27, 2021 · Synced Oct 21, 2026, 2:55 PM EDT