Background Sedative-hypnotics are a group of drugs that cause CNs depression Benzodiazepines(bzd) the most commonly a barbiturates used agents a nonbarbiturate nonbenzodiazepine sedative ypnotIcs(NBNBBackground Sedative-hypnotics are a group of drugs that cause CNS depression. ◼ Benzodiazepines (BZD) ◼ barbiturates ◼ nonbarbiturate nonbenzodiazepine sedative￾hypnotics (NBNB) the most commonly used agents