Restoril (temazepam) is a prescription medication used to treat insomnia and improve sleep quality. As a benzodiazepine, it enhances the effects of GABA, a neurotransmitter that helps calm the brain, making it easier to fall asleep and stay asleep. Generally taken before bedtime, Restoril is recommended for short-term use to avoid potential dependence. Users may experience side effects like drowsiness and dizziness.