Restoril is a brand name for the medication known as temazepam. It is a benzodiazepine sedative-hypnotic primarily used for the short-term treatment of insomnia. Because of benzo medicines, should be used with caution in elderly patients and individuals with respiratory or liver impairment, as they may be more susceptible to the sedative effects of Restoril. However, This medicine is one of the best medicines to treat insomnia.