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ClinicalTrials.gov public records Last synced Oct 2, 2026, 10:13 AM EDT

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Showing 25–48 of 153 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: PPI treatment Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of PVP001, PVP002, and PVP003 in Healthy Adults and PVP001 and PVP002 in Adults With Celiac Disease

NCT03701555
View directory record Official record
Conditions
Digestive System Disease
Interventions
PvP001 placebo, PvP001 100 mg, PvP001 300 mg, PvP001 900 mg, Maximum Feasible Dose (MFD) of PvP002, Maximum Tolerated Dose (MTD) of PvP001, MTD of PvP001 following 7 days of PPI treatment, PvP002 placebo, PvP001 600 mg, PvP003 placebo, PvP003, PvP003 150 mg
Other · Drug
Lead sponsor
Millennium Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
139 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Anaheim, California
Source: ClinicalTrials.gov public record
Updated Apr 4, 2023 · Synced Oct 2, 2026, 10:13 AM EDT
Enrolling by invitation Not applicable Interventional

Targeting Hypervigilance and Autonomic Arousal: the Psycho-physiologic Model of Gastroesophageal Reflux Disease (GERD)

NCT04960566
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
Cognitive Behavioral Therapy, Sham-SOC Lifestyle Coaching
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
2
States / cities
Chicago, Illinois • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 2, 2026, 10:13 AM EDT
Completed No phase listed Observational

Positive Predictive Value of the Dx-pH Probe for Predicting PPI Response in LPR

NCT01755221
View directory record Official record
Conditions
Laryngopharyngeal Reflux (LPR), Extraesophageal Reflux, Reflux Laryngitis, Posterior Laryngitis
Interventions
Not listed
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 89 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 2 Interventional Results available

A Study to Estimate Effect of 4 Different Doses of AZD3355 on Reflux Episodes, Which Patients With Gastroesophageal Reflux Disease (GERD) May Experience

NCT01043185
View directory record Official record
Conditions
Gastroesophageal Reflux Disease
Interventions
AZD3355, placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 70 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 14, 2011 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effects of Antihistamines on Pre-Pulse Inhibition

NCT01537471
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Meclizine
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 40 Years
Enrollment
117 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Oct 2, 2026, 10:13 AM EDT
Recruiting No phase listed Observational

Changes in Esophageal Distensibility With Proton Pump Inhibitors in Patients With Esophageal Eosinophilia: A Pilot Study

NCT03312686
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
endoflip
Diagnostic Test
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
2
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Trial to Evaluate the Effect of the Proton Pump Inhibitor Esomeprazole on the Single-dose Pharmacokinetics (PK) of Oral TAK-906 in Healthy Adult Participants

NCT03849690
View directory record Official record
Conditions
Healthy Volunteers
Interventions
TAK-906, Esomeprazole
Drug
Lead sponsor
Millennium Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 15, 2021 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Potential for Gastric-pH Dependent Drug-Drug Interactions of BIIB122 With a Proton Pump Inhibitor in Healthy Participants

NCT06264440
View directory record Official record
Conditions
Healthy Volunteer
Interventions
BIIB122, Rabeprazole
Drug
Lead sponsor
Biogen
Industry
Eligibility
30 Years to 80 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2024 · Synced Oct 2, 2026, 10:13 AM EDT
Terminated Not applicable Interventional Results available

Effect of Acid Suppression Medication on Pediatric Microbiome

NCT02016820
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Omeprazole (suspension), Lifestyle Modification
Drug · Other
Lead sponsor
Columbia University
Other
Eligibility
0 Years to 4 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 26, 2023 · Synced Oct 2, 2026, 10:13 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Averting Complications of Proton Pump Inhibitor Therapy by Effervescent Calcium Magnesium Citrate

NCT03812380
View directory record Official record
Conditions
Osteoporosis, Hypomagnesemia
Interventions
EffCaMgCit, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 99 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 17, 2022 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Not applicable Interventional

Tolerability Study of a Novel Microbiome Therapeutic in Subjects With Gastroesophageal Reflux Disease

NCT04491734
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
maltosyl-isomalto-oligosaccharides (MIMO)
Dietary Supplement
Lead sponsor
ISOThrive Inc.
Industry
Eligibility
25 Years to 75 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Manassas, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 30, 2021 · Synced Oct 2, 2026, 10:13 AM EDT
Recruiting Not applicable Interventional

Marginal Ulcer Healing With Low-Thermal Argon Plasma Endoscopic Treatment

NCT06543316
View directory record Official record
Conditions
Roux-en-y Anastomosis Site, Marginal Ulcer, Marginal Ulcer (Peptic) or Erosion, Ulcer, Ulcer, Gastric, Ulcer Gastrointestinal, Abdominal Pain, Nausea, Vomiting, GastroIntestinal Bleeding, Dysphagia, Ulcer Gastrojejunal
Interventions
Low Thermal Plasma (LTP) Treatment, Standard of Care Ulcer Treatment (typically PPI Administration)
Procedure · Other
Lead sponsor
Christopher C. Thompson, MD, MSc
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Examine the Effect of Omeprazole, Famotidine, and an Acidic Beverage on the Pharmacokinetics of Entinostat in Healthy Adult Subjects

NCT02922933
View directory record Official record
Conditions
Volunteers, Healthy Volunteers, Human Volunteers, Normal Volunteers
Interventions
entinostat, Omeprazole, Famotidine
Drug · Dietary Supplement
Lead sponsor
Syndax Pharmaceuticals
Industry
Eligibility
19 Years to 55 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Tempe, Arizona • Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 16, 2018 · Synced Oct 2, 2026, 10:13 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Treatment of Children With Obstructive Sleep Apnea and Laryngomalacia: the Role of Laser Supraglottoplasty

NCT00394550
View directory record Official record
Conditions
Sleep Apnea, Obstructive, Respiration Disorders
Interventions
supraglottoplasty with laser
Procedure
Lead sponsor
Indiana University
Other
Eligibility
1 Year to 18 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2019
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 25, 2022 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Not applicable Interventional Results available

Ablation of Intestinal Metaplasia Containing Dysplasia

NCT00282672
View directory record Official record
Conditions
Barrett Esophagus
Interventions
Ablation System plus anti-secretory medication, Sham procedure plus anti-secretory medication
Device
Lead sponsor
Medtronic - MITG
Industry
Eligibility
18 Years to 80 Years
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
19
States / cities
Scottsdale, Arizona • Tucson, Arizona • Orange, California + 15 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 4 Interventional Results available

Pilot Study To Investigate The Association Between Acid Control And Heartburn Symptoms After Proton Pump Inhibitor Treatment

NCT02708355
View directory record Official record
Conditions
Heartburn
Interventions
Esomeprazole 20 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
22 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
2
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 1 Interventional

A Study of GDC-0134 to Determine Initial Safety, Tolerability, and Pharmacokinetic Parameters in Participants With Amyotrophic Lateral Sclerosis

NCT02655614
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
GDC-0134, Placebo, Rabeprazole, Midazolam, Caffeine
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
8
States / cities
San Francisco, California • Jacksonville, Florida • Miami, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2020 · Synced Oct 2, 2026, 10:13 AM EDT
Not listed Phase 4 Interventional

Dexlansoprazole to Treat Laryngopharyngeal Reflux and Lingual Tonsil Hypertrophy

NCT01328652
View directory record Official record
Conditions
Laryngopharyngeal Reflux, Hypertrophy of Lingual Tonsil
Interventions
dexlansoprazole
Drug
Lead sponsor
Advanced Center for Specialty Care
Other
Eligibility
18 Years to 59 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 5, 2011 · Synced Oct 2, 2026, 10:13 AM EDT
Active, not recruiting Not applicable Interventional

Trial to Compare MRI-guided Precision Prone Irradiation (PPI) Versus CT-guided Breast Irradiation

NCT05731791
View directory record Official record
Conditions
Breast Cancer
Interventions
Radiation Therapy to partial breast
Radiation
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
50 Years to 90 Years · Female only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2034
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 23, 2026 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study of the Effect of Food and a Proton Pump Inhibitor (PPI; Omeprazole) on LOXO-305 in Healthy Participants

NCT05134350
View directory record Official record
Conditions
Healthy Volunteers
Interventions
LOXO-305, Omeprazole
Drug
Lead sponsor
Loxo Oncology, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Jan 10, 2025 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 3 Interventional

Efficacy/Safety of Lansoprazole in Patients With Frequent Heartburn

NCT00389948
View directory record Official record
Conditions
Heartburn
Interventions
Lanzoprazole
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
576 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
28
States / cities
Hoover, Alabama • Huntsville, Alabama • Sierra Vista, Arizona + 23 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2007 · Synced Oct 2, 2026, 10:13 AM EDT
Withdrawn Phase 2 Interventional

Efficacy Study of Botulinum Toxin (BOTOX) Injections to Treat Vocal Fold Granulomas

NCT01678053
View directory record Official record
Conditions
Contact Ulcer of Vocal Folds, Granuloma of Vocal Cords, Granuloma, Laryngeal, Granuloma
Interventions
onabotulinumtoxinA, omeprazole (proton pump inhibitor)
Drug
Lead sponsor
Phillip Song, MD
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Oct 2, 2026, 10:13 AM EDT
Not listed No phase listed Observational

Management of Esophagitis Following Repair of Esophageal Atresia

NCT03619408
View directory record Official record
Conditions
Esophageal Atresia, Esophagitis
Interventions
Antacids
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
30 Days to 17 Years
Enrollment
50 participants
Timeline
2019 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 10, 2021 · Synced Oct 2, 2026, 10:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Combination Therapy With Sitagliptin and Lansoprazole to Restore Pancreatic Beta Cell Function in Recent-Onset Type 1 Diabetes

NCT01155284
View directory record Official record
Conditions
Type 1 Diabetes
Interventions
Sitagliptin and Lansoprazole, Placebo
Drug
Lead sponsor
Sanford Health
Other
Eligibility
11 Years to 45 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
3
States / cities
San Diego, California • Saint Paul, Minnesota • Sioux Falls, South Dakota
Source: ClinicalTrials.gov public record
Updated Sep 18, 2017 · Synced Oct 2, 2026, 10:13 AM EDT