Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 2, 2026, 5:44 AM EDT

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Showing 1–24 of 35 matching trials from the live ClinicalTrials.gov search.
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Conditions
GI Health
Interventions
GI Health Placebo Control, GI Health Active Product
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Del Mar, California
Conditions
Belly Pain, GI Health
Interventions
GI Health Product Placebo Control, GI Health Active Product 1, GI Health Active Product 2
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Del Mar, California
Conditions
Colorectal Cancer (Diagnosis), Anal Cancer, Sexual Dysfunction Female
Interventions
Mind-Body Group Intervention, Enhanced Usual Care Control (EUCC)
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
GI Health
Interventions
GI Product Form - Control, GI Health Product Form - Active
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Del Mar, California
Recruiting Not applicable Interventional Accepts healthy volunteers

Kimchi and Gut Health

NCT07435831
Conditions
Healthy Adult Participants
Interventions
60 grams per day of intervention food
Other
Lead sponsor
University of California, Davis
Other
Eligibility
19 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
2
States / cities
Davis, California
Conditions
Colorectal Carcinoma
Interventions
Best Practice, Communication Intervention, Coordination, Educational Intervention, Electronic Health Record Review, Informational Intervention, Interview, Patient Navigation, Referral, Text Message-Based Navigation Intervention
Other · Behavioral
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
Not listed
Enrollment
1,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
2
States / cities
Los Angeles, California
Conditions
Gas and Bloating, Diarrhea, Constipation
Interventions
GI Health Active Product 1, GI Health Product Placebo Control
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Del Mar, California
Conditions
GI Symptoms
Interventions
Prebiotic Soda
Other
Lead sponsor
Olipop, PBC
Industry
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Los Angeles, California
Completed Not applicable Interventional Accepts healthy volunteers

Fermented Vegetables and Gut Microbiome Pilot Study

NCT06883994
Conditions
Fermented Vegetable Intake, Fermented Vegetable Acceptability, Gut Health, Gut Microbiome, Gastrointestinal Immune Function, Microbiome
Interventions
Fermented vegetable intervention
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Davis, California
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Methylnaltrexone on GI Transit in Healthy Volunteers

NCT01055704
Conditions
Gastric Motility Disorder
Interventions
Methylnaltrexone only, Codeine only, Methylnaltrexone + codeine, Placebo + placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of a Fermented Dairy Protein With Prebiotic Fiber on GI Complaints

NCT06946017
Conditions
Digestive Health, Quality of Life
Interventions
Fermented dairy protein with prebiotic fiber supplement, Control placebo
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 50 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Conditions
Colorectal Cancer, Anal Cancer, Sexual Dysfunction
Interventions
Mind-Body Group Intervention
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Digestion-associated Quality of Life
Interventions
Placebo GI Health Control, Active GI Health Product 1
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Del Mar, California
Conditions
Cancer, Cancer Diagnosis, Early Detection of Cancer, Breast Cancer, Lung Cancer, Colon Cancer, GI Cancer, Gynecologic Cancer, Ovarian Cancer, Endometrial Cancer, CNS Cancer, Hematologic Cancer
Interventions
Not listed
Lead sponsor
Avera McKennan Hospital & University Health Center
Other
Eligibility
18 Years and older
Enrollment
25,000 participants
Timeline
2021 – 2026
U.S. locations
6
States / cities
Marshall, Minnesota • Aberdeen, South Dakota • Mitchell, South Dakota + 3 more
Conditions
Abdominal Pain, GI Disorders, Digestion
Interventions
Radicle GI Health Placebo Control Form 1, Radicle GI Health Active Study Product 1.1 Usage, Radicle GI Health Placebo Control Form 2, Radicle GI Health Active Study Product 2.1 Usage, Radicle GI Health Placebo Control Form 3, Radicle GI Health Active Study Product 3.1 Usage, Radicle GI Health Placebo Control Form 4, Radicle GI Health Active Study Product 4.1 Usage, Radicle GI Health Placebo Control Form 5, Radicle GI Health Active Study Product 5.1 Usage, Radicle GI Health Placebo Control Form 7, Radicle GI Health Active Study Product 7.1 Usage, Radicle GI Health Placebo Control 7.2, Radicle GI Health Active Study Product 7.2.1 Usage, Radicle GI Health Placebo Control 7.3.0, Radicle GI Health Active Study Product 7.3.1 Usage, Radicle GI Health Placebo Control 7.4.0, Radicle GI Health Active Study Product 7.4.1 Usage
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
4,607 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Del Mar, California
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate the Influence of Diet on GI Health

NCT04783142
Conditions
Healthy
Interventions
High-fiber, low-protein diet, Low-fiber, high-protein diet
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Rochester, Minnesota
Conditions
Gastrointestinal, Gut Health
Interventions
Bifidobacterium pseudocatenulatum, Placebo
Dietary Supplement
Lead sponsor
Synbiotic Health
Industry
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Los Angeles, California
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Correlation of Toxins With Gastrointestinal (GI) and Overall Health

NCT06278311
Conditions
Gastrointestinal Diseases
Interventions
Not listed
Lead sponsor
Vibrant America Clinical Lab
Industry
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Los Angeles, California • Santa Clara, California
Conditions
Health, Wellness, Quality of Life
Interventions
A ready-to-mix beverage containing protein, fiber, and electrolytes
Dietary Supplement
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
21 Years to 75 Years
Enrollment
133 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Del Mar, California
Conditions
Digestion, Abdominal Pain, GI Disorders
Interventions
Radicle GI Health Placebo Control Form 1, Radicle GI Health Active Study Product 1.1 Usage, Radicle GI Health Placebo Control Form 2, Radicle GI Health Active Study Product 2.1 Usage, Radicle GI Health Active Study Product 2.2 Usage, Radicle GI Health Placebo Control Form 3, Radicle GI Health Active Study Product 3.1 Usage
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
2,180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Del Mar, California
Conditions
Cancer Metastatic, Symptoms and Signs, Quality of Life
Interventions
Symptom Management and Survivorship Handbook + Coaching, Symptom Management and Survivorship Handbook
Behavioral
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Tucson, Arizona
Conditions
Colorectal Cancer, Healthy Lifestyle, Behavior, Health, Health Behavior, Gastrointestinal Cancers
Interventions
RISE Personalized Self-Management Training (PSMT), Standardized Self-Management Training (SSMT)
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
2
States / cities
Los Angeles, California
Conditions
Colorectal Cancer
Interventions
Use of Interactive Voice Response (IVR) system to improve adherence to GI appointments and prep procedures
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
Not listed
Enrollment
3,610 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Minneapolis, Minnesota
Completed Not applicable Interventional Accepts healthy volunteers

Protein-Prebiotic Wellbeing Study

NCT05303753
Conditions
Digestive Health, Quality of Life
Interventions
fermented dairy protein with prebiotic fiber
Other
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 35 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Phoenix, Arizona