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ClinicalTrials.gov public records Last synced Oct 18, 2026, 8:27 AM EDT

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Showing 1–24 of 88 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Green Tea Extract Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Chamomile Intake on Blood Coagulation Tests in Healthy Volunteers

NCT05006378
View directory record Official record
Conditions
Coagulation Disorder
Interventions
Chamomile Tea, Chamomile Extract Capsule, Placebo Capsule
Dietary Supplement
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Feb 10, 2022 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Pharmacokinetics and Hepatic Safety of EGCG

NCT04177693
View directory record Official record
Conditions
Uterine Fibroids
Interventions
Epigallocatechin gallate (EGCG), Clomiphene Citrate, Letrozole
Dietary Supplement · Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Oct 18, 2026, 8:27 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

The Functional and Emotional Benefits of Replenix Power of Three With Resveratrol

NCT03563365
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Replenix Power of 3 Cream with resveratrol, Adapalene and Benzoyl peroxide gel, 0.1%/2.5%
Other · Drug
Lead sponsor
Yardley Dermatology Associates
Other
Eligibility
12 Years to 40 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Yardley, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 23, 2021 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Results available

Safety of Polyphenon E in Multiple Sclerosis Pilot Study

NCT00836719
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Polyphenon E
Drug
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jun 27, 2013 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Phase 2Phase 3 Interventional

Effect of an Extract of Green Tea on Adults With Type 2 Diabetes

NCT00389350
View directory record Official record
Conditions
Diabetes
Interventions
Extract of Green and Black Tea
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 90 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Oct 13, 2023 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Assess the Effects of a Vitamin Shot on Energy Levels

NCT06019858
View directory record Official record
Conditions
Energy, Fatigue, Mood, Weight Loss, Cognition
Interventions
Vitamin Energy Shot
Other
Lead sponsor
Vitamin Energy®
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 31, 2023 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Early Phase 1 Interventional

Chemopreventive Effects of Epigallocatechin Gallate (EGCG) in Colorectal Cancer (CRC) Patients

NCT02891538
View directory record Official record
Conditions
Colon Cancer
Interventions
Epigallocatechin gallate (EGCG)
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 18, 2026, 8:27 AM EDT
Not listed Early Phase 1 Interventional

Treatment of Fibromyalgia and CFS With Ribose, Ashwagandha, Rhodiola, Licorice, Schisandra and Green Tea Extract

NCT04598243
View directory record Official record
Conditions
Fibromyalgia, CFS
Interventions
Smart Energy System
Dietary Supplement
Lead sponsor
Practitioners Alliance Network
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Kailua, Hawaii
Source: ClinicalTrials.gov public record
Updated Oct 22, 2020 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating Whole Foods Supplementation on Cognition

NCT01672359
View directory record Official record
Conditions
Sub-optimal Cognitive Function, Sub-optimal Immune Function
Interventions
Ginkgo Synergy® and Choline, OPC Synergy® and Catalyn, Placebo
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
60 Years and older
Enrollment
97 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 6, 2014 · Synced Oct 18, 2026, 8:27 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Examining the Change in Microbiome Diversity and Urine Metabolites After Lignite Extract Use

NCT03026621
View directory record Official record
Conditions
Microbiome
Interventions
Lignite Extract, Herbal tea
Dietary Supplement · Other
Lead sponsor
Seraphic Group Inc
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2017 · Synced Oct 18, 2026, 8:27 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 23, 2021 · Synced Oct 18, 2026, 8:27 AM EDT
Withdrawn Phase 2 Interventional

Safety and Brain Protection Effects of the Green Tea Extract Theaphenon 95% (95% Pure EGCG) in Multiple Sclerosis

NCT02011451
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
95% Pure ECGC capsules 200mg, Placebo Comparator:
Drug
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 26, 2016 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Gut-level Antiinflammatory Activities of Green Tea in Metabolic Syndrome

NCT03973996
View directory record Official record
Conditions
Dysbiosis, Endotoxemia, Metabolic Syndrome, Inflammation
Interventions
Green Tea Extract, Placebo
Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 65 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 18, 2026, 8:27 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 15, 2012 · Synced Oct 18, 2026, 8:27 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 3, 2024 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Phase 2 Interventional Results available

Green Tea Extract in Treating Patients With Nonmetastatic Bladder Cancer

NCT00666562
View directory record Official record
Conditions
Stage I Bladder Cancer, Stage II Bladder Cancer, Stage III Bladder Cancer
Interventions
Defined Green Tea Catechin Extract, Laboratory Biomarker Analysis, Pharmacological Study, Placebo, Therapeutic Conventional Surgery
Dietary Supplement · Other · Drug + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
6
States / cities
Birmingham, Alabama • Burlington, Massachusetts • Minneapolis, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 17, 2017 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Phase 1 Interventional Results available

Study to Evaluate Safety and Toxicity of Polyphenon E (EGCG) in HIV-1-Infected Individuals

NCT01433289
View directory record Official record
Conditions
HIV Infection
Interventions
Polyphenon E, Placebo
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 19, 2023 · Synced Oct 18, 2026, 8:27 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 23, 2025 · Synced Oct 18, 2026, 8:27 AM EDT
Recruiting Not applicable Interventional

Percepta for Cognitive Optimization

NCT07612449
View directory record Official record
Conditions
Mild Cognitive Impairment (MCI), Memory
Interventions
Percepta, Placebo
Dietary Supplement
Lead sponsor
Cerebrum DAO Association
Other
Eligibility
40 Years to 85 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Evaluation of the Effects of a Non-Caffeinated Energy Dietary Supplement

NCT04895800
View directory record Official record
Conditions
Health Behavior
Interventions
Phytovive, Placebo, Caffeine
Dietary Supplement
Lead sponsor
Nova Southeastern University
Other
Eligibility
18 Years to 50 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Davie, Florida
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Phase 2 Interventional

Erlotinib and Green Tea Extract (Polyphenon® E) in Preventing Cancer Recurrence in Former Smokers Who Have Undergone Surgery for Bladder Cancer

NCT00088946
View directory record Official record
Conditions
Bladder Cancer
Interventions
Polyphenon E, erlotinib hydrochloride, Erlotinib placebo, Polyphenon E
Dietary Supplement · Drug · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
5
States / cities
Phoenix, Arizona • Los Angeles, California • Santa Monica, California + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2020 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Beet Supplementation, Exercise, Inflammation

NCT05907135
View directory record Official record
Conditions
Inflammatory Response, Metabolic Disturbance, Immune Suppression
Interventions
Beet, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Oct 18, 2026, 8:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Nutraceutical Effects on Long-Term Memory

NCT01963767
View directory record Official record
Conditions
Aging
Interventions
NT-020, Placebo
Drug · Dietary Supplement
Lead sponsor
University of South Florida
Other
Eligibility
65 Years to 85 Years
Enrollment
139 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jul 4, 2014 · Synced Oct 18, 2026, 8:27 AM EDT
Terminated Phase 1 Interventional

Oral Green Tea Extract and Milk Thistle Extract to Colorectal Cancer Patients Undergoing Resection

NCT01239095
View directory record Official record
Conditions
Colon Cancer
Interventions
Green Tea and Milk Thistle Supplements
Drug
Lead sponsor
Richard Whelan
Other
Eligibility
18 Years to 85 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Oct 18, 2026, 8:27 AM EDT