Which benzodiazepine is FDA approved with a sole indication as a treatment of insomnia?

Choice A reason: Temazepam is a 3-hydroxy benzodiazepine specifically indicated and FDA approved for the short-term treatment of insomnia. Unlike many other benzodiazepines that have broad indications for anxiety or seizures, temazepam's clinical use and official labeling are primarily focused on its sedative-hypnotic properties to assist with sleep onset and maintenance. Choice B reason: Lorazepam is FDA approved for the management of anxiety disorders, preoperative sedation, and the treatment of status epilepticus. While it possesses sedative properties and is frequently used off-label for sleep in clinical settings, its official primary indications do not list insomnia as the sole or primary reason for use. Choice C reason: Alprazolam is primarily FDA approved for the treatment of generalized anxiety disorder (GAD) and panic disorder. It is a triazolobenzodiazepine with a rapid onset and short half-life, making it effective for acute anxiety. It is not indicated by the FDA specifically or solely for the treatment of insomnia. Choice D reason: Clonazepam is FDA approved for the treatment of seizure disorders, including Lennox-Gastaut syndrome, and for panic disorder. It has a long half-life and is often used to manage chronic anxiety or REM sleep behavior disorder, but it is not FDA approved with a sole indication for insomnia.