<p>Amitriptyline is a tricyclic antidepressant and Chlordiazepoxide is an anxiolytic. Amitriptyline inhibits the reuptake of norepinephrine and serotonin in the brain. This interference with the reuptake is responsible for the antidepressant activity of Amitriptyline. Chlordiazepoxide works by enhancing GABA-mediated chloride influx through GABA receptor channels, causing membrane hyperpolarization. The net neuro-inhibitory effects result in the observed sedative and anxiolytic effect.</p>