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A Pharmacokinetic (PK) Study Evaluating Naproxen and Esomeprazole Plasma Levels

This study has been completed.
Information provided by:
POZEN Identifier:
First received: September 5, 2008
Last updated: December 19, 2008
Last verified: December 2008
A pharmacokinetic study evaluating naproxen and esomeprazole blood levels in 4 treatments, each containing one or both components.

Condition Intervention Phase
Drug: PN 400
Drug: EC naproxen plus EC esomeprazole
Drug: EC naproxen
Drug: EC esomeprazole
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: A Randomized, Open-Label, 4-Way Crossover Study to Evaluate Naproxen and Esomeprazole Plasma Levels in Healthy Subjects Following Oral Administration of PN 400, Enteric-Coated Naproxen 500mg Plus Enteric-Coated Esomeprazole 20mg, Enteric-Coated Naproxen 500mg Alone, and Enteric-Coated Esomeprazole 20mg Alone.

Resource links provided by NLM:

Further study details as provided by POZEN:

Primary Outcome Measures:
  • To assess the single-dose pharmacokinetics and relative bioavailability of esomeprazole in PN 400 (naproxen 500mg / esomeprazole 20mg), the enteric-coated (EC) naproxen 500mg plus EC esomeprazole 20mg and the EC esomeprazole 20mg alone treatments [ Time Frame: 12-72 hour PK assessments ]

Secondary Outcome Measures:
  • To assess the single-dose pharmacokinetics and relative bioavailability of naproxen in PN 400 (naproxen 500mg / esomeprazole 20mg, the EC naproxen 500mg plus EC esomeprazole 20mg, and the EC naproxen 500mg alone treatments. [ Time Frame: 72-hour PK assessments ]
  • To evaluate the safety of each of the single-dose treatments [ Time Frame: Entire study duration (48 days) ]

Enrollment: 40
Study Start Date: August 2008
Study Completion Date: October 2008
Primary Completion Date: October 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
PN 400
Drug: PN 400
A single tablet containing delayed-release naproxen (500mg) plus immediate-release esomeprazole (20mg)
Active Comparator: 2
Enteric-coated naproxen tablet (500mg) plus enteric-coated esomeprazole capsule(20mg)
Drug: EC naproxen plus EC esomeprazole
Enteric-coated naproxen tablet (500mg) plus enteric-coated esomeprazole capsule (20mg)
Other Name: EC Naprosyn and Nexium
Active Comparator: 3
Enteric-coated naproxen tablet (500mg)
Drug: EC naproxen
Enteric-coated naproxen tablet (500mg)
Other Name: EC Naprosyn
Active Comparator: 4
EC esomeprazole capsule (20mg)
Drug: EC esomeprazole
Enteric-coated esomeprazole capsule (20mg)
Other Name: Nexium

Detailed Description:
This study is being conducted to assess the relative bioavailability of naproxen and esomeprazole from a single dose of PN 400 (delayed-release naproxen 500mg / immediate-release esomeprazole 20mg), enteric-coated naproxen 500mg co-administered with enteric-coated esomeprazole 20mg, enteric-coated naproxen 500mg administered alone, and enteric-coated esomeprazole 20mg administered alone.

Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy males and non-pregnant, non-lactating females who are either of non-childbearing potential or using an acceptable method of birth control.

Exclusion Criteria:

  • Standard exclusion criteria for a study of this nature - no significant medical conditions that might affect the interpretation of the PK data or compromise the safety of the subject.
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Please refer to this study by its identifier: NCT00749385

United States, Texas
Austin, Texas, United States, 78744
Sponsors and Collaborators
  More Information

Responsible Party: David Taylor, POZEN Identifier: NCT00749385     History of Changes
Other Study ID Numbers: PN400-114
Study First Received: September 5, 2008
Last Updated: December 19, 2008

Additional relevant MeSH terms:
Anti-Ulcer Agents
Gastrointestinal Agents
Proton Pump Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-Inflammatory Agents, Non-Steroidal
Analgesics, Non-Narcotic
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Anti-Inflammatory Agents
Antirheumatic Agents
Gout Suppressants
Cyclooxygenase Inhibitors processed this record on May 22, 2017