Which Non-Benzodiazepine medication is primarily used for the treatment of insomnia?

Lunesta, or eszopiclone, is primarily used for the treatment of insomnia, making it the most suitable choice among the options provided. It belongs to a class of medications known as non-benzodiazepine hypnotics, specifically designed to help individuals initiate and maintain sleep. Eszopiclone is characterized by its rapid onset of action and relatively short half-life, which allows for effective sleep induction without the prolonged sedative effects commonly associated with some other sleep medications.

This medication has been shown to improve sleep latency and total sleep time, making it highly effective for short-term treatment of insomnia. Moreover, compared to benzodiazepines, eszopiclone has a lower risk of dependence, which is an important factor when considering long-term use for insomnia.

Other medications mentioned in the choices serve different purposes; for example, buspirone is primarily used for anxiety disorders rather than sleep issues. Halcion is a benzodiazepine that may also be used for insomnia, but the question specifically asks for a non-benzodiazepine option. Restoril, likewise a benzodiazepine, is also not a non-benzodiazepine. As such, Lunesta stands out as the most appropriate and effective