Benzodiazepines , which are included in a class of drugs called hypnotics; some types of benzodiazepines include clonazepam (Klonopin), diazepam (Valium), temazepam (Restoril), estazolam, alprazolam (Xanax), and lorazepam (Ativan). These drugs may be used to treat parasomnias. Occasionally, they are also used to treat bruxism (teeth grinding) and short-term insomnia.