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ClinicalTrials.gov public records Last synced Sep 11, 2026, 6:17 AM EDT

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Showing 1–24 of 235 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Systemic Sclerosis, Constipation, Gastrointestinal Motility Disorder, Autonomic Dysfunction
Interventions
Transcutaneous Electrical Acustimulation (TEA), Sham-TEA
Device
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Houston, Texas
Completed Not applicable Interventional Accepts healthy volunteers

Acute Effects of an Herbal Tea on Immune Surveillance and Activation.

NCT04491461
Conditions
Active Immune Response
Interventions
Herbal tea blend, Warm water
Dietary Supplement
Lead sponsor
Natural Immune Systems Inc
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Klamath Falls, Oregon
Conditions
Healthy
Interventions
Enlicitide
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Tempe, Arizona
Completed Not applicable Interventional Accepts healthy volunteers Results available

Gut-level Antiinflammatory Activities of Green Tea in Metabolic Syndrome

NCT03973996
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
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
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
Completed Not applicable Interventional Accepts healthy volunteers

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

NCT04895800
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
Conditions
Metastatic Breast Cancer
Interventions
Normal Eating, Prolonged Fasting
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
green tea extract
Dietary Supplement
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2000
U.S. locations
1
States / cities
New York, New York
Conditions
Neoplasms, Therapy, Fatigue, Diet Therapy, Time, Survivorship, Fasting, Intermittent
Interventions
Time-restricted eating, Healthy lifestyle education
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Completed Not applicable Interventional Accepts healthy volunteers

Polyphenols, Exercise, and Metabolomics

NCT01775384
Conditions
Exercise-induced Inflammation, Exercise-induced Oxidative Stress, Exercise-induced Immune Dysfunction
Interventions
Nutrasorb, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
18 Years to 55 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Kannapolis, North Carolina
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
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Antioxidants on Human Macular Pigments

NCT00718653
Conditions
Eye Health
Interventions
Lutein, Lutein plus green tea extract
Dietary Supplement
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
50 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
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
Completed Not applicable Interventional Accepts healthy volunteers Results available

Satiety and Alcohol Challenge

NCT06576674
Conditions
Alcohol Drinking
Interventions
Dietary Fiber + Green Tea Extract, Alcohol, Aspartame Placebo Supplement
Dietary Supplement · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
21 Years to 45 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers

Glucagon Like Peptide 1 (GLP-1) Booster™ RCT Study

NCT07141472
Conditions
Blood Sugar; High, Overweight and Obesity, Fat Loss, GLP-1, Glucagon
Interventions
GB, Placebo
Dietary Supplement
Lead sponsor
Lawry Han
Industry
Eligibility
18 Years to 65 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Conditions
Prostate Cancer
Interventions
green tea, soy protein isolate, vitamin E
Dietary Supplement
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2002
U.S. locations
1
States / cities
New York, New York
Recruiting Not applicable Interventional Accepts healthy volunteers

Thermogenenic Responses to Fasting and Overfeeding in Women

NCT06610162
Conditions
Obesity
Interventions
Eucalaloric feeding, Acute Fasting, Acute Overfeeding
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2030
U.S. locations
1
States / cities
Aurora, Colorado
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
Conditions
Herbal Interaction
Interventions
Kratom, Oxycodone
Dietary Supplement · Drug
Lead sponsor
Washington State University
Other
Eligibility
21 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Spokane, Washington
Conditions
Respiratory Viral Infection
Interventions
zinc-green tea extract-ascorbic acid, Placebo
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbia, Missouri
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
Conditions
Type 2 Diabetes
Interventions
Intermittent energy restriction (IER), Time Restricted Eating (TRE)
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Kansas City, Kansas
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