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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Mexiletine in the symptomatic treatment of diabetic peripheral neuropathy.

OBJECTIVE: To evaluate the efficacy and safety of mexiletine in the symptomatic treatment of diabetic peripheral neuropathy (DPN). METHODS: In this prospective, double-blind study, 29 patients were randomized to receive mexiletine 600 mg/d or matching placebo for 3 weeks. A four-item symptom score ( FIS), which rated pain, dysesthesias, paresthesias, and nightly exacerbations of symptoms, and a 100-mm visual analog scale (VAS), which rated pain intensity, were completed by patients before and after treatment. At the end of treatment independent patient and investigator global assessments were made. Patients reported adverse effects after 1 and 3 weeks of treatment. RESULTS: Treatment groups were similar at baseline. The difference between the median changes in FIS scores (mexiletine = 5.5, placebo = 2) was not statistically significant. Overall symptom response was similar in both treatment groups as demonstrated by both global assessments (p = 0.19). The mean change in VAS score from baseline to posttreatment was determined for both groups and the difference between these mean scores was 16.5 mm (95% CI, -7.1 to 40.2 mm) (p = 0.16). Inadequate statistical power (1-beta = 0.40) may have resulted from small sample size, small magnitude of effect, or variability in the measured effect. Adverse effects were more common in the mexiletine group, though not statistically significant. One patient receiving mexiletine was hospitalized for palpitations. CONCLUSIONS: Because of conflicting reports of mexiletine's efficacy in the treatment of symptomatic DPN, this drug should be reserved for patients unresponsive or intolerant to standard therapy, without evidence of heart disease, and with sensations of burning heat, formication, or stabbing pain.[1]

References

  1. Mexiletine in the symptomatic treatment of diabetic peripheral neuropathy. Wright, J.M., Oki, J.C., Graves, L. The Annals of pharmacotherapy. (1997) [Pubmed]
 
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