Medication Guide
Lexapro (Escitalopram): Uses, Side Effects & What to Expect
Escitalopram — sold as Lexapro — is one of the most widely prescribed antidepressants. It’s an SSRI used to treat depression and anxiety. Early effects on sleep and anxiety can show up in 1–2 weeks, with the full mood benefit usually taking 6–8 weeks. It is not addictive, but it should be stopped gradually with your prescriber rather than all at once.
Clinically reviewed by REPLACE_ME — Reviewing Physician, MD · Last reviewed June 2026
What is escitalopram?
Escitalopram is a selective serotonin reuptake inhibitor, or SSRI. It works by increasing the amount of serotonin — a chemical messenger linked to mood and calm — available between nerve cells in the brain. It’s the refined (S-enantiomer) version of an older medication called citalopram, and it’s sold under the brand name Lexapro as well as in generic form.
What does Lexapro treat?
The FDA has approved escitalopram for major depressive disorder in adults and adolescents aged 12 and older, and for generalized anxiety disorder in adults and children aged 7 and older. Psychiatrists also commonly prescribe it “off-label” — meaning supported by clinical experience and research — for conditions such as panic disorder, social anxiety disorder, obsessive-compulsive disorder (OCD), and premenstrual dysphoric disorder (PMDD).
How long does it take to work?
Antidepressants don’t work overnight, and that’s normal. Many people notice early changes — sleeping better, a steadier appetite, less day-to-day anxiety — within the first one to two weeks. The fuller benefit for mood, like renewed interest and energy, usually builds over six to eight weeks. The most important thing is to keep taking it consistently and stay in touch with your prescriber, even if the first couple of weeks feel slow.
Common side effects
Most side effects are mild and tend to be strongest in the first two weeks before easing as your body adjusts. The most commonly reported include:
- Nausea or an upset stomach
- Trouble sleeping, or feeling drowsy
- Dry mouth
- Increased sweating
- Dizziness or headache
- Fatigue
- Changes in digestion (diarrhea or constipation)
If a side effect is bothering you or doesn’t settle, reach out — often a small adjustment helps. Don’t stop the medication on your own.
An important safety note
Like all antidepressants, escitalopram carries an FDA “boxed warning”: in children, teens, and young adults under 25, antidepressants can in rare cases increase suicidal thoughts, especially in the first few months or after a dose change. This is exactly why close follow-up early in treatment matters — and it’s a core part of how we care for patients. If you or someone you love has thoughts of self-harm, call or text 988 (the Suicide & Crisis Lifeline) right away. Tell your prescriber about any new or worsening mood changes.
Stopping escitalopram safely
Escitalopram is not addictive, but your body does adjust to it — so stopping suddenly can cause “discontinuation” symptoms like dizziness, nausea, anxiety, mood changes, and trouble sleeping, often within one to three days. The good news: a gradual taper, planned with your prescriber, makes this far less likely. When it’s time to stop or switch, we’ll build a step-down plan that fits you.
A note on dosing
Dosing is always individualized by your prescriber based on your diagnosis, age, other medications, and how you respond — so this page intentionally doesn’t give a “take this much” number. The goal is the lowest effective dose, started and adjusted with your clinician.
Frequently asked questions
What is Lexapro (escitalopram) used for?
Escitalopram (brand name Lexapro) is an SSRI antidepressant that is FDA-approved to treat major depressive disorder in adults and adolescents 12 and older, and generalized anxiety disorder in adults and children 7 and older. Clinicians also prescribe it off-label for conditions such as panic disorder, social anxiety disorder, and OCD.
How long does Lexapro take to work?
Some early effects — better sleep, appetite, and reduced anxiety — can appear within the first 1 to 2 weeks. The full benefit for mood usually takes 6 to 8 weeks. It is important to keep taking it as prescribed even if you do not feel a difference right away.
What are the common side effects of escitalopram?
The most common side effects are nausea, trouble sleeping or drowsiness, dry mouth, increased sweating, dizziness, fatigue, and digestive changes. They are usually mildest, tend to be strongest in the first two weeks, and often ease as your body adjusts. Tell your prescriber if anything is bothering you.
Is Lexapro a controlled substance or addictive?
No. Escitalopram is not a controlled substance and is not considered addictive. However, you should not stop it suddenly — stopping abruptly can cause discontinuation symptoms, so your prescriber will help you taper gradually when it is time to stop.
How do I stop taking escitalopram safely?
Always stop with your prescriber's guidance. Stopping too quickly can cause discontinuation symptoms such as dizziness, nausea, anxiety, mood changes, and trouble sleeping, usually starting within 1 to 3 days. A gradual taper greatly reduces this risk. Never stop on your own without a plan.
Can I drink alcohol while taking Lexapro?
It is generally best to avoid or limit alcohol while taking escitalopram, because alcohol can worsen drowsiness and dizziness and can counteract the benefits for mood and anxiety. Talk with your prescriber about what is right for you.
Related pages
This page is for general education and is not medical advice or a substitute for care from your own clinician. Medication decisions should always be made with a licensed prescriber who knows your history.
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