The previous name of Lunesta is Estorra. One of the main features of nonbenzodiazepine hypnotic agents is sleep improvement and longtime insomnia treatment. Inability to fall asleep or lack of sleep is treatable by Lunesta. There are different strength of the product eszopiclone (main ingredient): 1 mg, and 2 mg, and also 3 mg. It comes in tablets. The most common and prescribed dosage is considered 2 mg.