What is lexapro

Last updated: April 1, 2026

Quick Answer: Lexapro is a prescription medication containing escitalopram, an SSRI (selective serotonin reuptake inhibitor) used to treat depression and anxiety disorders. It works by increasing serotonin levels in the brain.

Key Facts

Overview

Lexapro is a prescription antidepressant medication approved by the FDA in 2002. The medication contains escitalopram oxalate, which belongs to a class of drugs called selective serotonin reuptake inhibitors (SSRIs). Lexapro is one of the most commonly prescribed antidepressants in the United States, with millions of people using it to manage depression and anxiety disorders. Healthcare providers prescribe it for both short-term symptom relief and long-term mental health maintenance.

How Lexapro Works

Lexapro works by affecting brain chemistry, specifically targeting serotonin neurotransmitters. In depression and anxiety, serotonin levels are often lower than optimal, contributing to mood disturbances. Lexapro inhibits the reuptake of serotonin in the brain, meaning it prevents the reabsorption of serotonin back into nerve cells. This action increases the amount of available serotonin in the synaptic space between neurons, improving mood regulation and reducing anxiety symptoms. The mechanism is not fully understood, but this reuptake inhibition appears central to the medication's therapeutic effect.

Approved Uses

The FDA has approved Lexapro for treating major depressive disorder in both adults and adolescents ages 12 and older. It is also approved for generalized anxiety disorder in adults. Healthcare providers may prescribe Lexapro off-label for other conditions including panic disorder, social anxiety disorder, obsessive-compulsive disorder, and post-traumatic stress disorder, though these are not FDA-approved uses. Patients should discuss their specific condition with their healthcare provider to determine if Lexapro is appropriate.

Side Effects and Considerations

Like all medications, Lexapro can cause side effects ranging from mild to severe. Common side effects include nausea, insomnia, fatigue, decreased appetite, and sexual dysfunction. Weight changes, tremors, and sweating have been reported. Most side effects typically diminish over time as the body adjusts to the medication. However, some people experience persistent side effects that may require dose adjustment or medication changes. It's important to discuss any concerning symptoms with a healthcare provider rather than stopping the medication abruptly.

Treatment Timeline

Lexapro does not provide immediate symptom relief like some other medication types. Most people require 2 to 4 weeks of consistent use before noticing improvements in mood or anxiety. Full therapeutic benefits often take 6 to 8 weeks to develop. Dosages are typically started at lower levels (5-10mg daily) and may be adjusted based on response and side effect profiles. Treatment with Lexapro is usually long-term, with patients continuing use for months or years to maintain stability and prevent relapse.

Related Questions

Is Lexapro safe during pregnancy?

Lexapro is generally considered one of the safer SSRIs during pregnancy, though risks and benefits should be discussed with healthcare providers. Untreated depression during pregnancy can also pose risks, making the decision complex.

Can you drink alcohol while taking Lexapro?

Alcohol can increase side effects like dizziness and drowsiness when combined with Lexapro. Most healthcare providers recommend limiting or avoiding alcohol use while taking this medication.

What should you do if you miss a dose of Lexapro?

If you miss a dose, take it as soon as you remember unless it's nearly time for the next dose. Do not double up on doses. Contact your pharmacist or doctor if you're unsure about a missed dose.

Sources

  1. MedlinePlus - Escitalopram Oral
  2. Wikipedia - EscitalopramCC-BY-SA-4.0