Clinical trials: Stomach Acidity
Normal Healthy Subject Population
Comparison of Prilosec OTC® Versus Zegerid® for Gastric Acid Suppression
The purpose of this study is to compare Prilosec OTC® and Zegerid® in their effects on gastric acid suppression.
- Trial name
- NCT00808769
- Testing
- Zegerid®, Prilosec OTC®
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Procter and Gamble
Stomach Neoplasms, Metaplasia
Acetic Acid Chromoendoscopy to Judge Gastric Intestinal Metaplasia
The presence and the extent of gastric intestinal metaplasia(IM) is a good indicator of high risk group of gastric cancer. Many methods was developed to survey it, including multiple gastric biopsy or methylene blue…
- Trial name
- IM (NCT01499576)
- Testing
- Acetic acid chromoendoscopy
- Where
- South Korea
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- Konyang University Hospital
Osteoporosis
The Effect of Protein on Calcium Absorption and Gastric Acid Production
We have established that dietary protein is an important regulator of intestinal calcium absorption in humans. However, we do not understand the mechanism by which dietary protein is affecting calcium absorption.
- Trial name
- NCT00719160
- Testing
- esomeprazole
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Yale University
Intragastric Acidity
Pharmacodynamic Study Comparing the Effects of Two Different Forms of Omeprazole (P07812) (COMPLETED)
This randomized, crossover study is to evaluate the early effectiveness, defined as effect on intragastric pH during the first 4 hours after dosing, of Zegerid, Prilosec over-the-counter (OTC) Tablets, and placebo on the 4th day…
- Trial name
- NCT01077076
- Testing
- Zegerid, Prilosec OTC™ Tablets
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Bayer
Healthy
Comparison of Prilosec Over-the-counter (OTC)® Versus Prevacid® for Gastric Acid Suppression
The objective of this study is to compare Prilosec OTC® to Prevacid® for gastric acid suppression.
- Trial name
- NCT00903448
- Testing
- Prilosec OTC (omeprazole-magnesium), Prevacid
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Procter and Gamble
Clostridium Difficile
Effects of Gastric Acid on Colonic Microbiome
The colonic microbiome is essential in human health and disease. Clostridium difficile-associated diarrhea (CDAD), a highly morbid form of infectious diarrhea, is caused by antibiotics which perturb the microbiome and allow C.
- Trial name
- NCT01901276
- Testing
- Omeprazole 40 mg bid
- Where
- United States
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Daniel Freedberg, MD
Pulmonary Disease, Chronic Obstructive
GSK1325756 Relative Bioavailability Study in Healthy Elderly Subjects
This 2-part study will be carried out on healthy elderly subjects to evaluate relative bioavailability of danirixin formulations.
- Trial name
- NCT03457727
- Testing
- Danirixin, Omeprazole
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- GlaxoSmithKline
Post-tonsillectomy Pain, Post-tonsillectomy Activity
The Effects of Reducing Stomach Acid on Post-tonsillectomy Pain
This study was designed to determine whether post-operative pain following a tonsillectomy can be reduced by adding an antacid-like medication to the medications taken after surgery.
- Conditions
- Post-tonsillectomy Pain, Post-tonsillectomy Activity, Post-tonsillectomy Hydration
- Trial name
- NCT00472186
- Testing
- Lansoprazole
- Where
- 2 sites in United States
- Volunteers
- 2 people, healthy volunteers welcome
- Sponsor
- Boston Children's Hospital
Infection, Achlorhydria
Clinical Experiment of Helicobacter Pylori Transmission
The study proposes to test whether chronic infection with Helicobacter pylori protects individuals from symptomatic infection with enteropathogenic E. coli.
- Trial name
- NCT00550368
- Testing
- Biological intervention: Enteropathogenic E. coli
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Stanford University
Healthy, Barrett's Esophagus
Pilot Study to Image the Esophagus Using a SECM Tethered Endoscopic Capsule
The goal of this research is to test the imaging quality of the modified, larger diameter, tethered Spectrally Encoded Confocal Microscopy (SECM) capsule in healthy subjects, subjects with Barrett's Esophagus (BE), and subjects…
- Conditions
- Healthy, Barrett's Esophagus, Gastric Acid Reflux
- Trial name
- SECM (NCT02445014)
- Testing
- MGH SECM Imaging Capsule
- Where
- United States
- Volunteers
- 3 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Probiotics
Gastric Acid Suppression and Probiotic Colonization
Probiotics are over-the-counter dietary products with microorganisms that are generally consumed for health benefit. However, the durability of these microorganisms is unclear, particularly when they pass through the highly…
- Trial name
- PR (NCT03327051)
- Testing
- Omeprazole, VSL #3
- Where
- United States
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- Stanford University
Gastric Acid, Human Experimentation
A Pharmacodynamic Study Comparing Zegerid® and Prilosec OTC® (CL2007-17 )(P07813)(COMPLETED)
Open-label randomized crossover design studies. 60 participants will be evaluated on Day 1 to compare effects on stomach acid; 30 participants will continue treatment for 7 days and will have repeat evaluations at Day 7.
- Trial name
- NCT00674115
- Testing
- Omeprazole/sodium bicarbonate, omeprazole magnesium, sodium bicarbonate
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Bayer
Gastric Acid, Human Experimentation
A Pharmacodynamic Study Comparing Zegerid® and Prilosec OTC® (Study CL2008-02)(P07814)(COMPLETED)
Open-label randomized crossover design study. 60 participants will be evaluated on Day 1 to compare effects on stomach acid; 30 participants will continue treatment for 7 days and will have repeat evaluations at Day 7.
- Trial name
- NCT00765206
- Testing
- Omeprazole/sodium bicarbonate, omeprazole magnesium (20 mg equivalent)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Bayer
Pharmacodynamic
Study of the Ability of Betaine Hydrochloride to Increase Stomach Acid in Healthy Volunteers
In this study the investigators will test a nutritional supplement called betaine hydrochloride to see if it can temporarily increase the stomach acid in healthy volunteers who have decreased stomach acid because they take a…
- Trial name
- NCT01237353
- Testing
- betaine hydrochloride, Rabeprazole
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Healthy Volunteers
A Study of Maribavir Pediatric Formulation in Healthy Adult Participants
The study will have 2 parts, Part 1 and Part 2. Participants will only participate in one part. The main aim of Part 1 of this study is to check the ability of a single dose of maribavir pediatric formulation to be absorbed in…
- Trial name
- NCT05918822
- Testing
- Maribavir Commercial Tablet Formulation, Maribavir Pediatric Powder-for-oral Suspension Formulation, Rabeprazole
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Takeda
Osteoporosis, Achlorhydria
Does Omeprazole Decrease Intestinal Calcium Absorption?
The purpose of this study is to measure the effect of omeprazole on intestinal calcium absorption in postmenopausal women.
- Conditions
- Osteoporosis, Achlorhydria, GERD, Hip Fracture
- Trial name
- NCT00582972
- Testing
- Omeprazole
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison