Escitalopram is a selective serotonin reuptake inhibitor (SSRI) used primarily for the treatment of major depressive disorder and generalized anxiety disorder in adults and adolescents. It acts by blocking the reabsorption of serotonin in the brain, which boosts serotonin levels in the synaptic cleft and results in improved mood and reduced anxiety. Escitalopram is known for its higher selectivity to the serotonin transporter and occasionally quicker onset compared to other SSRIs, and it is also prescribed off-label for related psychiatric conditions such as social anxiety, OCD, panic disorder, and premenstrual dysphoric disorder. This medication is regarded for its safety and tolerability in both short-term and long-term depression and anxiety therapy.