Ambien (zolpidem) is not a benzo (benzodiazepine), it is unique in its action and does not resemble benzodiazepines or barbiturates at all. But it does work similarly. Both benzodiazepines and Ambien are thought to enhance the effects of a specific neurotransmitter in the brain called GABA. However, Ambien only induces sleep whereas benzodiazepines also work as anticonvulsants and muscle relaxants.