Lexapro (escitalopram) is an antidepressant from the group of drugs called selective serotonin reuptake inhibitors (SSRIs) and is used to treat certain types of depression and anxiety. Lexapro is a prescription medicine used to treat the symptoms of major depressive disorder and generalized anxiety disorder. Learn about side effects, drug interactions, warnings, precautions, overdose, and others Find patient medical information for Escitalopram (Lexapro) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Lexapro (escitalopram) is usually taken once a day and can be taken either in the morning or at night. Lexapro is the brand name of the medication escitalopram. It treats depression and anxiety by increasing the amount of serotonin in your brain. Description Escitalopram is used to treat depression and generalized anxiety disorder (GAD). It is an antidepressant that belongs to a group of medicines known as selective serotonin reuptake inhibitors (SSRIs). These medicines work by increasing the activity of the chemical serotonin in the brain. This medicine is available only with your doctor's prescription. Learn about escitalopram (Lexapro) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Escitalopram, sold under the brand names Lexapro and Cipralex, among others, is an antidepressant medication of the selective serotonin reuptake inhibitor (SSRI) class. [8] Lexapro (escitalopram) is a commonly prescribed antidepressant that can cause side effects, especially in the first week of use. These effects, such as nausea and trouble sleeping, often subside quickly. Lexapro is a brand name for escitalopram—the active ingredient in Lexapro. It belongs to a class of drugs called SSRIs, all of which work to increase levels of serotonin in the brain.