Which of the following medications is classified as a benzodiazepine?

Temazepam is classified as a benzodiazepine because it belongs to a group of psychoactive medications that enhance the effect of the neurotransmitter gamma-aminobutyric acid (GABA) at the GABA-A receptor. This class of drugs is primarily used for their sedative, anxiolytic (anti-anxiety), muscle relaxant, and anticonvulsant properties. Temazepam specifically is commonly prescribed for the short-term management of insomnia due to its ability to promote sleep onset and maintenance.

In contrast, the other medications listed serve different purposes and belong to other drug classes. Olanzapine is an atypical antipsychotic used to treat schizophrenia and bipolar disorder. Fluoxetine is a selective serotonin reuptake inhibitor (SSRI) that is primarily used as an antidepressant. Risperidone is another atypical antipsychotic that addresses symptoms associated with schizophrenia, bipolar disorder, and irritability in autism spectrum disorders. Each of these medications operates through different mechanisms and has distinct therapeutic uses, which further differentiates them from benzodiazepines like temazepam.