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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: GI Product Placebo Control Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of a Probiotic Strain on Ibuprofen-induced GI Damage

NCT04447924
View directory record Official record
Conditions
Reduction of Small Intestinal Ulceration Risk
Interventions
Bif195, Placebo
Dietary Supplement · Other
Lead sponsor
Chr Hansen
Industry
Eligibility
18 Years to 40 Years
Enrollment
177 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 25, 2021 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2Phase 3 Interventional

Efficacy, Safety, and Tolerability Study of RP-G28 in Subjects With Lactose Intolerance

NCT02673749
View directory record Official record
Conditions
Lactose Intolerance
Interventions
RP-G28, Placebo
Drug · Other
Lead sponsor
Ritter Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
377 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 3 Interventional Results available

Dabigatran Etexilate for Secondary Stroke Prevention in Patients With Embolic Stroke of Undetermined Source (RE-SPECT ESUS)

NCT02239120
View directory record Official record
Conditions
Stroke, Secondary Prevention
Interventions
optional ASA as comedication, placebo to ASA, placebo to optional ASA as comedication, placebo to dabigatran etexilate, ASA 100 mg, dabigatran etexilate
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years to 150 Years
Enrollment
5,390 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
110
States / cities
Phoenix, Arizona • Beverly Hills, California • El Cajon, California + 94 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2019 · Synced Sep 3, 2026, 6:17 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

The Effect of a Probiotic Strain on Aspirin-induced GI Damage

NCT03910322
View directory record Official record
Conditions
Reduction of Small Intestinal Ulceration Risk
Interventions
Bif195, Placebo
Dietary Supplement
Lead sponsor
Chr Hansen
Industry
Eligibility
40 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 25, 2020 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Radicle GI Health: A Study Assessing the Impact of Health and Wellness Products on Gastrointestinal (GI) Health and Related Health Outcomes.

NCT07212231
View directory record Official record
Conditions
GI Health
Interventions
GI Product Placebo Control, Active Product 1, Active Product 2, Active Product 3, Active Product 4, Active Product 5
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
1,501 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Del Mar, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2 Interventional Results available

Uproleselan (GMI-1271) for GI Toxicity Prophylaxis During Melphalan-Conditioned Autologous Hematopoietic Cell Transplantation (Auto-HCT) for Multiple Myeloma (MM)

NCT04682405
View directory record Official record
Conditions
Multiple Myeloma
Interventions
Uproleselan, Placebo, Melphalan
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Sep 3, 2026, 6:17 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Radicle GI Health RAATM: A Study Assessing the Impact of Health and Wellness Products on Gastrointestinal-Related Quality of Life and Related Health Outcomes

NCT07653776
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Radicle GI Health RDH™: A Study Assessing the Impact of Health and Wellness Products on Gastrointestinal (GI) Health and Related Health Outcomes

NCT07230821
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2 Interventional

Entereg Laparoscopic Colon Resection Study

NCT01258569
View directory record Official record
Conditions
Laparoscopic Colonic Resection
Interventions
Entereg, placebo
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 85 Years
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 25, 2015 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Long-Term Immunogenicity of the Norovirus GI.1/GII.4 Bivalent Virus-like Particle (VLP) Vaccine (NoV Vaccine) in Adults

NCT03039790
View directory record Official record
Conditions
Healthy Volunteers, Norovirus
Interventions
NoV Vaccine
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
528 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
9
States / cities
Birmingham, Alabama • Fountain Hills, Arizona • Littleton, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Radicle GI HealthTM RCA: A Study Assessing the Impact of Health and Wellness Products on Gastrointestinal (GI) Health and Related Health Outcomes

NCT07130058
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Study to Evaluate the Efficacy of Tenapanor as Adjunctive Therapy to Phosphate Binder Therapy

NCT03824587
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Tenapanor, Placebo, Phosphate Binder Agents
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
18 Years to 80 Years
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
48
States / cities
Huntsville, Alabama • Pine Bluff, Arkansas • Beverly Hills, California + 41 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2023 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2 Interventional

Effectiveness, Safety and Tolerability Study of RP-G28 for Symptoms Associated With Lactose Intolerance

NCT01113619
View directory record Official record
Conditions
Lactose Intolerance
Interventions
RP-G28 or placebo
Drug
Lead sponsor
Ritter Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
2
States / cities
Honolulu, Hawaii • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 7, 2011 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Radicle GI Health 24: A Study of Health and Wellness Products on GI Health and Related Health Outcomes

NCT06376695
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Oct 1, 2025 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Placebo-controlled, Randomized Trial of an Adenoviral-vector Based Norovirus Vaccine

NCT02868073
View directory record Official record
Conditions
Norovirus Gastroenteritis
Interventions
VXA-G1.1-NN (high dose) Oral Vaccine Tablet, VXA Placebo Tablets, VXA-G1.1-NN (low dose) Oral Vaccine Tablet
Biological · Other
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Sep 3, 2026, 6:17 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Radicle GI HealthTM VNB: A Study Assessing the Impact of Health and Wellness Products on Constipation and Related Health Outcomes

NCT07713810
View directory record Official record
Conditions
Constipation
Interventions
Placebo GI Health Control, Active GI Health Product
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
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2 Interventional Results available

A Safety and Efficacy Study of Eltrombopag in Subjects With AML

NCT01890746
View directory record Official record
Conditions
Acute Leukaemia
Interventions
Daunorubicin, Cytarabine, Eltrombopag, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
14
States / cities
Farmington, Connecticut • Miami, Florida • Orlando, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 10, 2019 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Lactobacillus Reuteri (L. Reuteri) in Healthy Adults

NCT00922727
View directory record Official record
Conditions
Colic, Gastrointestinal Tract Infections
Interventions
L. reuteri, Sunflower Oil
Biological
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 24, 2018 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Radicle GI Health™: A Study Assessing the Impact of Health and Wellness Products on Gastrointestinal (GI) Health

NCT06999642
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Oct 5, 2025 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Norovirus Bivalent Virus-Like Particle Vaccine in Healthy Adults

NCT02142504
View directory record Official record
Conditions
Norovirus Prevention
Interventions
Norovirus Bivalent VLP Vaccine, Placebo (Saline)
Biological · Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 49 Years
Enrollment
454 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
10
States / cities
San Diego, California • San Francisco, California • Coral Gables, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2017 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Radicle GI Health: A Study of Health and Wellness Products on GI Health and Other Health Outcomes

NCT06009614
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 19, 2024 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Radicle GI Health DBG: A Study Assessing the Impact of Health and Wellness Products on GI Health and Related Health Outcomes

NCT07318077
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy of Dietary Supplement in Subjects With Acid Reflux and/or Abdominal Bloating/Distention and GI Symptoms

NCT06808867
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Dietary Supplement with Active Ingredient Blend
Dietary Supplement
Lead sponsor
Olly, PBC
Industry
Eligibility
18 Years to 85 Years
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Sep 3, 2026, 6:17 PM EDT
Completed Phase 2 Interventional

AT1001 for the Treatment of Long COVID

NCT05747534
View directory record Official record
Conditions
Long COVID, Long COVID-19, Post Acute COVID-19 Syndrome, Post Acute Sequelae of COVID-19
Interventions
Larazotide Acetate, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
7 Years to 50 Years
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 3, 2026, 6:17 PM EDT