actionpills.com/product-category/buy-lunesta-online· This medication is used to treat a certain sleep problem (insomnia). It may help you fall asleep faster, stay asleep longer, and lessen how often you wake up at night, so you can get a better night's rest. Eszopiclone belongs to a class of drugs called sedative-hypnotics. It acts on your brain to produce a calming effect. Use of this medication is usually limited to short treatment periods of 1 to 2 weeks or less.