Pharmacokinetics of Immediate-Release vs. Delayed-Release Omeprazole in Gastroparesis

NCT ID: NCT00492622

Last Updated: 2017-07-28

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

12 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-06-30

Study Completion Date

2008-12-31

Brief Summary

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The purpose of this study is to compare the blood drug levels of two prescribed medications, immediate-release omeprazole 40 mg powder and delayed-release omeprazole 40 mg capsule to determine which drug is better absorbed in patients with a slow stomach emptying (gastroparesis). Delayed-release omeprazole has a protective coating to prevent the drug omeprazole from being neutralized by stomach acid. Immediate-release omeprazole has sodium bicarbonate (antacid) which neutralizes the stomach acid, eliminating the need for a protective coating. Immediate-release omeprazole suspension may have a more rapid pharmacokinetic profile and greater overall drug absorption in gastroparesis.

Detailed Description

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Hypothesis: Immediate-release omeprazole suspension may have a more rapid pharmacokinetic profile and greater overall drug absorption in gastroparesis. This will result in shorter time to maximal drug concentration, greater maximal concentration, and greater total area under the curve of the concentration vs. time plot.

Primary Objective: To compare the pharmacokinetics of omeprazole between immediate-release suspension and delayed-release capsules in patients with heartburn associated with gastroparesis.

Study design: randomized, open-labeled, crossover treatment for 7 days with 10-14 days washout. Pharmacokinetic studies will be performed after 7 days on study drug.

Conditions

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Gastroparesis Gastroesophageal Reflux Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Immediate-release omeprazole release first

subjects receive immediate release omeprazole for 7 days then delayed release for 7 days

Group Type EXPERIMENTAL

Immediate-release omeprazole

Intervention Type DRUG

Immediate-release omeprazole 40 mg qam for 7 days

Delayed-release omeprazole

Intervention Type DRUG

Delayed-release omeprazole 40 mg qam for 7 days

Delayed-release omeprazole first

subjects receive delayed release omeprazole for 7 days then immediate release for 7 days

Group Type EXPERIMENTAL

Immediate-release omeprazole

Intervention Type DRUG

Immediate-release omeprazole 40 mg qam for 7 days

Delayed-release omeprazole

Intervention Type DRUG

Delayed-release omeprazole 40 mg qam for 7 days

Interventions

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Immediate-release omeprazole

Immediate-release omeprazole 40 mg qam for 7 days

Intervention Type DRUG

Delayed-release omeprazole

Delayed-release omeprazole 40 mg qam for 7 days

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Symptoms of heartburn \>2 days per week off antireflux therapy, defined by "a burning feeling rising from the stomach or lower chest up towards the neck"
* Symptoms of gastroparesis \>1 month in duration, defined by nausea, vomiting, bloating, dyspepsia, early satiety, or effortless regurgitation.
* Prior abnormal 4-hour gastric emptying scan within the past 3 years

Exclusion Criteria

* History of esophageal or gastric surgery
* Severe gastroparesis with any of the following: vomiting with dehydration requiring IV hydration, hospitalization, weight loss \>10 % pre-illness weight, requiring feeding jejunostomy tubes
* Presence of gastric electrical stimulator
* Symptoms of retching with vomiting more than 2 days per week
* Diagnosis of diabetes
* Disorders of small bowel motility (such as pseudo-obstruction or dumping syndrome)
* Disorders of small bowel absorption
* Diagnosis of gastric outlet, small bowel or colon mechanical obstruction
* Diagnosis of acid hypersecretory syndrome
* Disorders affecting proton pump inhibitor metabolism (such as liver failure)
* Known allergy or side effects to proton pump inhibitor
* Non-ambulatory patients: bed-ridden, nursing home resident, etc.
* Pregnancy
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Bausch Health Americas, Inc.

INDUSTRY

Sponsor Role collaborator

University of Louisville

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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John M Wo, MD

Role: PRINCIPAL_INVESTIGATOR

University of Louisville

Locations

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Digestive Health Center, University of Louisville Hospital

Louisville, Kentucky, United States

Site Status

Countries

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United States

References

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Wo JM, Eversmann J, Mann S. Pharmacokinetic profile of immediate-release omeprazole in patients with gastro-oesophageal reflux associated with gastroparesis. Aliment Pharmacol Ther. 2010 Feb 15;31(4):516-22. doi: 10.1111/j.1365-2036.2009.04203.x. Epub 2009 Nov 19.

Reference Type RESULT
PMID: 19925497 (View on PubMed)

Other Identifiers

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014.07

Identifier Type: -

Identifier Source: org_study_id

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