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Related Experiment Videos

Gabapentin use in a managed medicaid population.

Ann M Hamer1, Dean G Haxby, Bentson H McFarland

  • 1Oregon State University, College of Pharmacy, Portland, OR 97201, USA.

Journal of Managed Care Pharmacy : JMCP
|November 14, 2003
PubMed
Summary

Gabapentin, an antiepileptic drug, was frequently prescribed for off-label uses in primary care, with most patients showing no documented benefit and lacking adequate follow-up. This study highlights potential overuse of gabapentin for unproven indications.

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Area of Science:

  • Pharmacology
  • Primary Care Medicine
  • Health Services Research

Background:

  • Gabapentin is an antiepileptic agent with established uses.
  • Its application in primary care settings warrants evaluation for appropriateness and efficacy.

Purpose of the Study:

  • To assess the utilization patterns of gabapentin in primary care.
  • Key areas of investigation included treated conditions, prescriber specialties, dosage, documentation, and patient follow-up.

Main Methods:

  • Retrospective review of claims data and patient charts.
  • Study population comprised Oregon Health Plan (OHP) members enrolled in CareOregon receiving care at OHSU primary care clinics.
  • Data analysis focused on 105 patients prescribed gabapentin.

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Main Results:

  • 95% of patients received gabapentin for off-label diagnoses, primarily chronic pain and mental disorders.
  • Dosing and intervals varied significantly.
  • Only 12% showed documented efficacy, and 40% lacked documented follow-up.

Conclusions:

  • Gabapentin prescriptions in this Medicaid managed population were predominantly for off-label indications.
  • Clinical trial evidence does not support gabapentin use for many conditions treated.
  • The majority of patients did not demonstrate apparent benefit from gabapentin therapy.