Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Jul 23, 2026, 12:00 PM EDT

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Showing 1–8 of 8 matching trials from the live ClinicalTrials.gov search.
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Conditions
Non-Erosive Gastro-Esophageal Reflux Disease, Heartburn
Interventions
Vonoprazan, Placebo
Drug
Lead sponsor
Phathom Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
458 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
63
States / cities
Anniston, Alabama • Athens, Alabama • Huntsville, Alabama + 55 more
Conditions
Erosive Esophagitis, Heartburn, Symptomatic Non-erosive Gastroesophageal Reflux Disease, Helicobacter Pylori Infection
Interventions
Vonoprazan
Drug
Lead sponsor
Phathom Pharmaceuticals, Inc.
Industry
Eligibility
15 Years to 50 Years · Female only
Enrollment
728 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2034
U.S. locations
1
States / cities
Wilmington, North Carolina
Conditions
Gastroesophageal Reflux Disease
Interventions
Dexlansoprazole MR, Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
908 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
99
States / cities
Anniston, Alabama • Hueytown, Alabama • Huntsville, Alabama + 96 more
Conditions
Gastroesophageal Reflux Disease
Interventions
Rabeprazole 20 mg
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Vista, California
Conditions
Non-Erosive Gastro-Esophageal Reflux Disease, Heartburn
Interventions
Vonoprazan, Placebo
Drug
Lead sponsor
Phathom Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
776 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
108
States / cities
Athens, Alabama • Cullman, Alabama • Huntsville, Alabama + 94 more
Conditions
Gastroesophageal Reflux Disease
Interventions
Dexlansoprazole
Drug
Lead sponsor
Takeda
Industry
Eligibility
12 Years to 17 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
35
States / cities
Huntsville, Alabama • Mobile, Alabama • Phoenix, Arizona + 32 more
Conditions
Gastroesophageal Reflux Disease
Interventions
Dexlansoprazole MR, Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
908 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
95
States / cities
Alabaster, Alabama • Birmingham, Alabama • Huntsville, Alabama + 92 more
Conditions
Gastroesophageal Reflux
Interventions
Dexlansoprazole, Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 65 Years
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
43
States / cities
Tucson, Arizona • Anaheim, California • Garden Grove, California + 40 more