zolpidem
n. a nonbenzodiazepine hypnotic for short-term management of insomnia. Although structurally different from the benzodiazepines, it acts similarly by binding to a specific site on the GABAA receptorgabaa-receptor. Its side effects are infrequent but may include dizziness, headache, nausea and vomiting, and amnesia. U.S. trade name: Ambien.