Benzodiazepines work predominantly by affecting:

A. Serotonin reuptake: Benzodiazepines do not inhibit serotonin reuptake. SSRIs and SNRIs are the primary drug classes that modulate serotonin availability in the synaptic cleft. B. Monoamine oxidase: Monoamine oxidase inhibitors (MAOIs) affect the breakdown of monoamines such as serotonin, norepinephrine, and dopamine. Benzodiazepines do not target this enzyme system. C. Norepinephrine: Benzodiazepines do not directly influence norepinephrine release or reuptake. Noradrenergic modulation is more relevant to SNRIs or adrenergic agents. D. GABA (gamma-aminobutyric acid): Benzodiazepines enhance the effect of GABA, the primary inhibitory neurotransmitter in the CNS. They bind to GABA-A receptors, increasing chloride ion influx, hyperpolarizing neurons, and producing anxiolytic, sedative, muscle-relaxant, and anticonvulsant effects.