alexa Meta-analyses of hypnotics and infections: eszopiclone, ramelteon, zaleplon, and zolpidem.
Neurology

Neurology

Journal of Sleep Disorders & Therapy

Author(s): Joya FL, Kripke DF, Loving RT, Dawson A, Kline LE

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Abstract STUDY OBJECTIVES: Recent meta-analyses raising concern about risks of hypnotics suggest a need for more clarification of these risks. METHODS: Because of preliminary suggestions that eszopiclone causes infections, we studied US Food and Drug Administration files on the 4 most-recently approved hypnotics, combined with published studies, to compile the risk ratios of infections for groups randomly assigned to receive hypnotics versus those assigned to receive placebos in controlled trials. Parallel controlled clinical trials of eszopiclone, ramelteon, zaleplon, and zolpidem were included when data on subjects, duration of exposure, and adverse effects were available. Results of trials were combined by meta-analyses. RESULTS: Of 8828 participants assigned to the 4 hypnotics and 4383 participants who randomly received placebos, 606 in the hypnotics groups and 200 in the placebo groups were reported to develop some kind of infection (risk ratio = 1.44, 95\% confidence interval 1.25-1.64, p < 0.00001). Most infections were apparently mild and did not lead to dropouts. Subanalyses for individual drugs indicated that eszopiclone and zolpidem individually were associated with reported infections. There were insufficient data concerning individual studies of zaleplon and ramelteon for valid secondary meta-analyses of zaleplon or ramelteon by themselves. CONCLUSIONS: Research is needed to objectively determine whether the use of hypnotics increases the risk of infections. Immune compromise or esophageal reflux and aspiration should be studied as possible mechanisms.
This article was published in J Clin Sleep Med and referenced in Journal of Sleep Disorders & Therapy

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