Eszopiclone marketed by Sunovion under the brand-name Lunesta is a nonbenzodiazepine hypnotic which is slightly effective for insomnia. Eszopiclone is the active dextrorotatory stereoisomer of zopiclone and belongs to the class of drugs known as cyclopyrrolones.Eszopiclone (Lunesta) along with other Z-drugs including zolpidem (Ambien) zaleplon (Sonata) are the most commonly prescribed sedative hypnotics in the US.
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