Eszopiclone for insomnia.
OBJECTIVE: To review the pharmacology, pharmacokinetics, efficacy data, and adverse effects of eszopiclone in the treatment of transient and chronic insomnia in adult and geriatric patients. DATA SOURCES: A MEDLINE literature search (1966-May 2005) was conducted to retrieve articles and abstracts involving eszopiclone. The manufacturer of the drug provided a general summary of clinical data and abstracts of unpublished Phase III clinical trials. STUDY SELECTION AND DATA EXTRACTION: All articles identified from the data sources were reviewed, and information deemed relevant was included for this review. DATA SYNTHESIS: Food and Drug Administration approval of eszopiclone was based on 6 double-blind, placebo-controlled trials. Five trials published in abstract or study form were reviewed. The sixth trial was not available for evaluation. An open-label continuation trial was also reviewed. All studies showed statistically significant improvements in sleep parameters in adult and elderly patients treated for insomnia with eszopiclone. CONCLUSIONS: The results of the 5 available double-blind, placebo-controlled studies (and 1 open-label, 6-month extension) showed that eszopiclone was safe and effective in the treatment of transient and chronic insomnia in adult and geriatric patients. Tolerance with long-term exposure (6 mo) and rebound insomnia were not observed. The results of the 6-month, open-label extension trial demonstrated that improvements in sleep parameters were sustained. Future studies comparing eszopiclone with other non benzodiazepine sedative-hypnotics (eg, zolpidem, zaleplon) are needed with cost data to clearly define the role of eszopiclone in the pharmacotherapy of chronic insomnia.[1]References
- Eszopiclone for insomnia. Melton, S.T., Wood, J.M., Kirkwood, C.K. The Annals of pharmacotherapy. (2005) [Pubmed]
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