Nonbenzodiazepines act on the CNS in a manner that is very similar to benzodiazepines.

• A. And act very much like benzodiazepines
• B. They have no effect on GABA receptors
• C. They block dopamine receptors
• D. They act as stimulants

Answer: (A)

Nonbenzodiazepines produce their effect by enhancing the action of GABA at the GABA-A receptor, binding at the benzodiazepine site and increasing inhibitory signaling in the brain. This positive allosteric modulation leads to calming, sedative effects similar to benzodiazepines. The other options don’t fit because these drugs do act on GABA receptors, they do not block dopamine receptors, and they are not stimulants.