Pharmacology III – CNS Module Practice Exam

Temazepam is the benzodiazepine that is least likely to disrupt REM sleep. This characteristic is primarily due to its pharmacokinetic properties and its role as a sleep aid. Temazepam has a relatively short half-life, which allows it to facilitate sleep without significantly interfering with the natural sleep architecture, including REM sleep, which is essential for restorative processes.

Benzodiazepines in general are known to alter sleep patterns, and different agents can have varied effects on REM sleep. While some benzodiazepines, particularly those with longer half-lives and more potent effects on sedation, can lead to more disruption in REM sleep, temazepam is specifically formulated for managing sleep disturbances and has been shown to harness sedative qualities while minimizing the impact on REM cycles. Thus, when considering its clinical use for sleep induction, it tends to preserve REM sleep better than many of its counterparts.

The other benzodiazepines listed, such as clonazepam, diazepam, and alprazolam, may be more likely to result in REM sleep suppression. Clonazepam and diazepam have longer half-lives, which can lead to increased sedation and a greater chance of altering REM sleep. Alprazolam, while primarily