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ClinicalTrials.gov public records Last synced Oct 25, 2026, 7:33 PM EDT

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Showing 1–24 of 46 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: tea capsule Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Assessing the Pharmacokinetics and Drug Interaction Liability of Kratom, an Opioid-like Natural Product

NCT04392011
View directory record Official record
Conditions
Interaction Drug Food
Interventions
Midazolam HCl, Dextromethorphan HBr, Kratom
Drug · Dietary Supplement
Lead sponsor
Washington State University
Other
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Spokane, Washington
Source: ClinicalTrials.gov public record
Updated Oct 19, 2026 · Synced Oct 25, 2026, 7:33 PM EDT
Terminated Phase 2 Interventional

Green Tea Extract: a Non-Surgical Alternative for Treatment of Uterine Fibroids

NCT01311869
View directory record Official record
Conditions
Leiomyoma
Interventions
EGCG ( Green Tea extract), Brown rice pills
Dietary Supplement
Lead sponsor
Meharry Medical College
Other
Eligibility
18 Years and older · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 24, 2013 · Synced Oct 25, 2026, 7:33 PM EDT
Terminated Phase 2 Interventional Results available

Green Tea Extract in Treating Patients With Monoclonal Gammopathy of Undetermined Significance and/or Smoldering Multiple Myeloma

NCT00942422
View directory record Official record
Conditions
Multiple Myeloma and Plasma Cell Neoplasm, Precancerous Condition
Interventions
defined green tea catechin extract, gene expression analysis, protein analysis, laboratory biomarker analysis
Dietary Supplement · Genetic · Other
Lead sponsor
Barbara Ann Karmanos Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 27, 2015 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Quantifiably Determine if the Botanical Formulation, LLP-01, Has a Significant Clinical Effect on Proteomic Inflammatory and Cardiovascular Biomarkers in Healthy, Older Individuals.

NCT06065241
View directory record Official record
Conditions
Aging, Inflammation
Interventions
LLP-01, Placebo
Dietary Supplement · Other
Lead sponsor
LL Prosper Inc.
Industry
Eligibility
50 Years to 75 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Oct 25, 2026, 7:33 PM 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 25, 2026, 7:33 PM 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 14, 2017 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Green Tea and Reduction of Breast Cancer Risk

NCT00917735
View directory record Official record
Conditions
Breast Cancer
Interventions
Green tea extract supplement, Placebo
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
50 Years to 70 Years · Female only
Enrollment
1,075 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
5
States / cities
Edina, Minnesota • Maple Grove, Minnesota • Minneapolis, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 22, 2016 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Absorption, Metabolism and Excretion of Apigenin and Apigenin Glycosides

NCT03526081
View directory record Official record
Conditions
Healthy
Interventions
Chamomile Tea, Parsley based drink, Parsley Yogurt, Apigenin, Parsley-based drink (II)
Other
Lead sponsor
University of California, Davis
Other
Eligibility
25 Years to 60 Years · Male only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
2
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated May 23, 2019 · Synced Oct 25, 2026, 7:33 PM 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 21, 2017 · Synced Oct 25, 2026, 7:33 PM EDT
Active, not recruiting Phase 3 Interventional

FRIEND: Fibroids and Unexplained Infertility Treatment With Epigallocatechin Gallate; A Natural CompounD in Green Tea

NCT05364008
View directory record Official record
Conditions
Leiomyoma, Uterine
Interventions
Green Tea Extract, Placebo
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
4
States / cities
New Haven, Connecticut • Chicago, Illinois • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 25, 2026, 7:33 PM EDT
Withdrawn Not applicable Interventional

Prevention of Weight Gain and Dyslipidemia by Green Tea in Patients Initiating Therapy With Olanzapine

NCT00934908
View directory record Official record
Conditions
Bipolar Disorder, Schizophrenia
Interventions
Green Tea, Placebo
Dietary Supplement · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 55 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 18, 2018 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Not applicable Interventional

Diabetes Visual Function Supplement Study

NCT01646047
View directory record Official record
Conditions
Diabetes Mellitus - Type 1, Diabetes Mellitus - Type 2, Non-proliferative Diabetic Retinopathy
Interventions
multi-component nutritional supplement capsules, multi-component dietary supplement
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jan 22, 2015 · Synced Oct 25, 2026, 7:33 PM EDT
Recruiting Phase 1Phase 2 Interventional

Green Tea and Quercetin in Combination With Docetaxel Chemotherapy in Castration-resistant Prostate Cancer Patients

NCT06615752
View directory record Official record
Conditions
Metastatic Castration-resistant Prostate Cancer (mCRPC)
Interventions
green tea and quercetin + docetaxel, Placebo + docetaxel
Drug
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
18 Years and older · Male only
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Over-the-counter Dietary Supplements on Kidney Stone Risk

NCT02404701
View directory record Official record
Conditions
Hyperoxaluria
Interventions
Aloe vera with cactus, Cranberry, Green tea extract, Bilberry, Cinnamon, Milk thistle, Turmeric, Aloe vera
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 27, 2016 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Phase 1 Interventional

Defined Green Tea Catechin Extract in Preventing Esophageal Cancer in Patients With Barrett's Esophagus

NCT00233935
View directory record Official record
Conditions
Barrett Esophagus
Interventions
placebo, defined green tea catechin extract
Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
3
States / cities
New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 11, 2014 · Synced Oct 25, 2026, 7:33 PM 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 5, 2025 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acute Effects of Naturally Occurring Tea and Coffee-based Ingredients on Cognitive Performance

NCT06062186
View directory record Official record
Conditions
Cognitive Change
Interventions
Placebo, AmaTea Guayusa Extract, Lion's Mane
Dietary Supplement
Lead sponsor
The Center for Applied Health Sciences, LLC
Industry
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced Oct 25, 2026, 7:33 PM 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 25, 2026, 7:33 PM EDT
Not listed Not applicable Interventional

Prospective Study of Adjunctive Carotenoids Plus Anti-oxidants in Anti-VEGF Treated Diabetic Macular Edema

NCT03866005
View directory record Official record
Conditions
Center-involved Diabetic Macular Edema (CI-DME)
Interventions
Diabetes Visual Function Study (DiVFuSS) softgels, canola oil placebo softgels, 2 per day
Dietary Supplement · Other
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Olympia, Washington • Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jul 2, 2020 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Phase 2 Interventional

ROAR-DIGAP: A Widely Inclusive, Largely Virtual Pilot Trial Utilizing DIGAP (Deep Integrated Genomics Analysis Platform) To Personalize Treatments

NCT06429059
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis ALS
Interventions
Astaxanthin, Protandim, Melatonin, MitoQ
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
2
States / cities
Durham, North Carolina • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 26, 2025 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Nutritional Supplement Capsule Containing Curcumin, Green Tea Extract, Polygonum Cuspidatum Extract, and Soybean Extract in Healthy Participants

NCT00768118
View directory record Official record
Conditions
Healthy, no Evidence of Disease
Interventions
curcumin/green tea extract/Polygonum cuspidatum extract/soybean extract capsule, electrophoretic mobility shift assay, laboratory biomarker analysis
Dietary Supplement · Genetic · Other
Lead sponsor
Barbara Ann Karmanos Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 23, 2014 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Phase 2 Interventional Results available

Green Tea or Polyphenon E in Preventing Lung Cancer in Former Smokers With Chronic Obstructive Pulmonary Disease

NCT00363805
View directory record Official record
Conditions
Lung Cancer Prevention
Interventions
green tea, Polyphenon E, placebo
Dietary Supplement · Drug · Other
Lead sponsor
Sherry Chow
Other
Eligibility
40 Years to 80 Years
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
3
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 28, 2013 · Synced Oct 25, 2026, 7:33 PM EDT
Completed Not applicable Interventional

Green Tea in Breast Cancer Patients

NCT00949923
View directory record Official record
Conditions
Incident Breast Cancer
Interventions
tea capsule
Dietary Supplement
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older · Female only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 30, 2018 · Synced Oct 25, 2026, 7:33 PM EDT
Terminated Phase 2 Interventional Results available

A Pilot Study of Chemo-prevention of Green Tea in Women With Ductal Carcinoma in Situ

NCT01060345
View directory record Official record
Conditions
Ductal Carcinoma in Situ
Interventions
Polyphenon E
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 9, 2020 · Synced Oct 25, 2026, 7:33 PM EDT