• B Hemstreet and M Lapointe.
• School of Pharmacy, University of Colorado Health Sciences Center, Denver 80262-0238, USA. Brian.Hemstreet@uchsc.edu
• Clin Ther. 2001 Apr 1;23(4):520-31.

BackgroundOne of the most common peripheral nerve complications of diabetes is painful diabetic peripheral neuropathy (DPN). Although tricyclic antidepressants (TCAs) have traditionally been used to relieve the pain of this condition, gabapentin's reported efficacy in various neuropathic pain states and its favorable side-effect profile compared with other available agents have led to interest in the use of this agent for the treatment of DPN.ObjectivesThis paper reviews the current clinical literature on the effectiveness and tolerability of gabapentin in the treatment of DPN. It also considers whether the evidence favors gabapentin's use as an alternative or first-line agent.MethodsA search of the English- and French-language literature for the years 1990 through 2000 was performed using MEDLINE, Current Contents/Clinical Medicine, and International Pharmaceutical Abstracts, plus the reference lists of the articles identified through this search. The search terms used were gabapentin, anticonvulsant, diabetic peripheral neuropathy, and neuropathy. Included studies were limited to trials in human subjects.ResultsThe literature search identified several case reports and case series, as well as 3 small placebo-controlled studies (2 complete, 1 brief report) and 1 comparative trial against the TCA amitriptyline. The designs and dosing regimens differed between studies.ConclusionsMany clinicians consider gabapentin an alternative treatment option in patients with DPN who are unable to tolerate traditional agents or in whom traditional agents are contraindicated. To date, gabapentin has been well tolerated, superior to placebo, and equivalent to amitriptyline in small clinical trials of short duration. Although overall efficacy and safety profiles appear to be favorable, larger long-term studies are needed to determine the place of gabapentin in relation to other treatment options. There is currently insufficient evidence from controlled trials to support the use of gabapentin as first-line therapy for DPN.

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