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Showing 1–24 of 50 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 1 Interventional

Safety, Metabolism, and Antioxidant Activity of Silymarin and Green Tea Extract in Patients With Chronic Hepatitis C

NCT01018615
View directory record Official record
Conditions
Chronic Hepatitis C, Oxidative Stress
Interventions
silymarin, green tea extract (EGCG)
Drug · Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Exploratory Investigation of a Supplement to Promote Brain Health

NCT05520424
View directory record Official record
Conditions
Memory Deficits, Cognitive Change, Stress
Interventions
The Daily Supplement
Dietary Supplement
Lead sponsor
Parable
Industry
Eligibility
30 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Apr 2, 2024 · Synced Sep 25, 2026, 11:52 AM EDT
Terminated Phase 2 Interventional Results available

Safety and Neuroprotective Effects of Polyphenon E in MS; Phase II

NCT01451723
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Polyphenon E, Placebo
Drug · Other
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years to 60 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 13, 2014 · Synced Sep 25, 2026, 11:52 AM EDT
Recruiting Phase 2 Interventional

EGCG for Hepatocellular Carcinoma Chemoprevention

NCT06015022
View directory record Official record
Conditions
Cirrhosis, Liver
Interventions
Epigallocatechin gallate (EGCG), Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 1 Interventional

Defined Green Tea Catechin Extract in Treating Women With Hormone Receptor Negative Stage I-III Breast Cancer

NCT00516243
View directory record Official record
Conditions
Estrogen Receptor-negative Breast Cancer, Progesterone Receptor-negative Breast Cancer, Stage I Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer
Interventions
placebo, quality-of-life assessment, questionnaire administration, laboratory biomarker analysis, defined green tea catechin extract
Other · Procedure · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
21 Years to 65 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
4
States / cities
New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 11, 2014 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Gut-brain Axis: a Novel Target for Treating Behavioral Alterations in Obesity

NCT01976156
View directory record Official record
Conditions
Neural Response in Caudate, Weight Loss Trial, Impulsivity
Interventions
PhosphoLean, Placebo
Dietary Supplement
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 26, 2018 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Fibroblast Specific Inhibition of LOXL2 and TGFbeta1 Signaling in Patients With Pulmonary Fibrosis.

NCT03928847
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
Epigallocatechin-3-gallate (EGCG)
Drug
Lead sponsor
Hal Chapman
Other
Eligibility
40 Years to 70 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 21, 2022 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 2 Interventional Results available

A Study of the Effect of Polyphenon E (Green Tea Extract) on Breast Cancer Progression

NCT00676793
View directory record Official record
Conditions
Breast Cancer
Interventions
Polyphenon E
Drug
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
21 Years to 75 Years · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2013
U.S. locations
2
States / cities
Shreveport, Louisiana • New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 20, 2017 · Synced Sep 25, 2026, 11:52 AM EDT
Suspended Phase 2 Interventional

Reducing Frailty for Older Cancer Survivors Using Supplements II

NCT06068543
View directory record Official record
Conditions
Frailty, Inflammation
Interventions
Epigallocatechin-3-Gallate (EGCG), Microcrystalline cellulose (MCC), Ascorbic Acid (Vitamin C)
Drug · Dietary Supplement
Lead sponsor
University of Rochester
Other
Eligibility
65 Years and older
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 25, 2026, 11:52 AM EDT
Not yet recruiting Phase 1 Interventional

Daily, Encapsulated, Green Tea Extract to Mitigate Neuropathic Pain in Patients With Established Cancer-Associated Neuropathic Pain

NCT07682324
View directory record Official record
Conditions
Neuropathic Pain, Cancer Treatment
Interventions
Green Tea Leaf Extract Decaffeinated, Placebo Control
Dietary Supplement · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 1 Interventional

Phase I Chemoprevention Trial With Green Tea Polyphenon E & Erlotinib in Patients With Premalignant Lesions of the Head & Neck

NCT01116336
View directory record Official record
Conditions
Cancer of Head and Neck, Neoplasms, Head and Neck
Interventions
Erlotinib, Green Tea Polyphenon E
Drug · Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2018
U.S. locations
3
States / cities
Atlanta, Georgia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 4, 2018 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 2 Interventional Results available

Pilot Study of Green Tea Extract (Polyphenon E®)in Ulcerative Colitis

NCT00718094
View directory record Official record
Conditions
Mild to Moderately Active Ulcerative Colitis
Interventions
Polyphenon E®, Placebo Oral Tablet
Drug
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Dec 13, 2017 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Absorption, Metabolism and Excretion of Dietary Polyphenolic Bioactives in Humans

NCT03194620
View directory record Official record
Conditions
Healthy
Interventions
Thearubigins, Theaflavins, Procyanidin Dimer B2 (DB2), (-)-Epigallocatechin-3-O-gallate (EGCG), (-)-Epicatechin-3-O-gallate (ECG), (-)-Epicatechin (EC), (-)-Epigallocatechin (EGC), Control
Other
Lead sponsor
University of California, Davis
Other
Eligibility
25 Years to 60 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 5, 2017 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 1 Interventional

Defined Green Tea Catechins in Treating Patients With Prostate Cancer Undergoing Surgery to Remove the Prostate

NCT00459407
View directory record Official record
Conditions
Adenocarcinoma of the Prostate, Stage I Prostate Cancer, Stage II Prostate Cancer
Interventions
defined green tea catechin extract, placebo, immunohistochemistry staining method, immunoenzyme technique, laboratory biomarker analysis, biopsy, mass spectrometry, high performance liquid chromatography
Dietary Supplement · Drug · Other + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 7, 2014 · Synced Sep 25, 2026, 11:52 AM 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 7, 2012 · Synced Sep 25, 2026, 11:52 AM EDT
Terminated Phase 2 Interventional

Defined Green Tea Catechin Extract in Treating Patients With Localized Prostate Cancer Undergoing Surgery

NCT01340599
View directory record Official record
Conditions
Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer
Interventions
defined green tea catechin extract, placebo, immunohistochemistry staining method, immunoenzyme technique, questionnaire administration, therapeutic conventional surgery, high performance liquid chromatography, mass spectrometry
Dietary Supplement · Other · Procedure
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
45 Years to 75 Years · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 14, 2012 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Green Tea Extract (Polyphenon E) in Preventing Cancer in Healthy Participants

NCT00091325
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
defined green tea catechin extract
Dietary Supplement
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2004
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 19, 2010 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 2 Interventional Results available

Green Tea Extract in Preventing Cervical Cancer in Patients With Human Papillomavirus and Low-Grade Cervical Intraepithelial Neoplasia

NCT00303823
View directory record Official record
Conditions
Cervical Cancer, Cervical Intraepithelial Neoplasia Grade 1, Human Papilloma Virus Infection
Interventions
placebo, defined green tea catechin extract, laboratory biomarker analysis
Drug · Dietary Supplement · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated May 4, 2015 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Phase 2 Interventional Results available

Study of Polyphenon E in Men With High-grade Prostatic Intraepithelial Neoplasia

NCT00596011
View directory record Official record
Conditions
Prostatic Hyperplasia
Interventions
Polyphenon E, Placebo
Drug
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
30 Years to 80 Years · Male only
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
10
States / cities
Gainesville, Florida • Jacksonville, Florida • Lakeland, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 3, 2019 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Gut-brain Axis in Food Reward and Alcohol Consumption

NCT01902069
View directory record Official record
Conditions
Impulsivity, Alcohol Consumption
Interventions
Phospholean, Placebo
Dietary Supplement
Lead sponsor
Yale University
Other
Eligibility
21 Years to 45 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 2, 2020 · Synced Sep 25, 2026, 11:52 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Salivary Interactions With Chemosensations

NCT03883880
View directory record Official record
Conditions
Diet, Food Choice, Taste
Interventions
Epigallocatechin gallate, Epigallocatechin gallate control, Linoleic acid, Linoleic acid control, Capsaicin solution, Capsaicin control
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Sep 25, 2026, 11:52 AM EDT
Not listed Phase 1 Interventional

Defined Green Tea Catechin Extract in Preventing Liver Cancer in Participants With Cirrhosis

NCT03278925
View directory record Official record
Conditions
Cirrhosis
Interventions
Biopsy, Biospecimen Collection, Computed Tomography, Defined Green Tea Catechin Extract, Laboratory Biomarker Analysis, Magnetic Resonance Imaging, Pharmacological Study, Questionnaire Administration, Ultrasound
Procedure · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 1, 2024 · Synced Sep 25, 2026, 11:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Slowly Digestible Carbohydrates on the Gut-brain Axis

NCT05349903
View directory record Official record
Conditions
Appetitive Behavior, Obesity, Diabetes Mellitus, Type 2
Interventions
Rice flour, Alternanoligosaccharide 15, Inulin, Waxy potato starch, Waxy potato starch + epigallocatechin gallate (EGCG), Chickpea flour + epigallocatechin gallate (EGCG)
Other
Lead sponsor
Purdue University
Other
Eligibility
22 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 26, 2022 · Synced Sep 25, 2026, 11:52 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Efficacy of a Tea Catechin Sports Drink for Enhancing Exercise-Induced Fat Loss

NCT00692731
View directory record Official record
Conditions
Overweight, Obesity
Interventions
500 mL/day of a beverage providing approximately 625 mg catechins, Control beverage matched for energy and caffeine content
Dietary Supplement · Other
Lead sponsor
Provident Clinical Research
Other
Eligibility
21 Years to 65 Years
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
2
States / cities
St. Petersburg, Florida • Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 5, 2008 · Synced Sep 25, 2026, 11:52 AM EDT