Escitalopram (Lexapro): Uses, Dosage, Side Effects, and What to Expect
Escitalopram (brand name Lexapro) is an SSRI antidepressant that’s FDA-approved for depression and generalized anxiety disorder. It’s one of the most commonly prescribed first choices for both, partly because dosing is simple: most adults take 10 mg once a day, with 20 mg as the maximum. Mood and anxiety typically improve over 4 to 6 weeks. Common side effects include nausea, sleep changes, and sexual side effects, and it has fewer drug interactions than many other antidepressants.
Selective serotonin reuptake inhibitor (SSRI)
10 mg daily; max 20 mg
4–6 weeks; full effect by 8–12
No. Can be prescribed by telehealth
What Is Escitalopram Used For?
FDA-approved uses
- Major depressive disorder in adults and adolescents 12 and older (depression treatment)
- Generalized anxiety disorder (GAD) in adults (anxiety treatment)
Common off-label uses
- Panic disorder and social anxiety disorder
- OCD, sometimes at higher doses under close supervision (OCD & panic treatment)
- PTSD symptoms
How Does Escitalopram Work?
Escitalopram blocks the reuptake of serotonin, a chemical messenger involved in mood, worry, and sleep, leaving more of it available between nerve cells. It’s the purified active half of an older drug, citalopram (Celexa), which is why it works at a lower milligram dose. The benefit builds over weeks as the brain adapts, so it’s taken every day rather than as needed.
Escitalopram Dosage
| Group | Starting dose | Maximum |
|---|---|---|
| Adults (depression or GAD) | 10 mg once daily | 20 mg, after at least 1 week |
| Adolescents 12+ (depression) | 10 mg once daily | 20 mg, after at least 3 weeks |
| Older adults or liver impairment | 10 mg once daily | 10 mg |
Source: FDA prescribing information. Some people start at 5 mg to ease early side effects, at the prescriber’s discretion.
- Take it once a day, morning or evening, with or without food. Pick the time that suits your side effects.
- Missed a dose? Take it when you remember unless it’s nearly time for the next one. Don’t double up.
- Its half-life is about 27 to 32 hours, so it stays fairly steady in your system day to day.
How Long Does Escitalopram Take to Work?
Side effects often show up before benefits. Some people sleep better or feel less tense within 1 to 2 weeks; mood and anxiety typically improve by 4 to 6 weeks, with full effect by 8 to 12 weeks. If there’s little change after 4 to 6 weeks at a steady dose, talk with your prescriber about adjusting rather than stopping.
Escitalopram Side Effects
In placebo-controlled depression trials, these were among the most common side effects:
| Side effect | Escitalopram | Placebo |
|---|---|---|
| Nausea | 15% | 7% |
| Insomnia | 9% | 4% |
| Ejaculation disorder (men) | 9% | <1% |
| Diarrhea | 8% | 5% |
| Drowsiness | 6% | 2% |
| Increased sweating | 5% | 2% |
| Fatigue | 5% | 2% |
Source: Escitalopram FDA prescribing information, depression trials. Rates were somewhat higher in GAD trials.
Sexual side effects
Lower libido, delayed ejaculation, and trouble reaching orgasm are common with SSRIs, and the label notes trial figures likely underestimate them. Unlike nausea, they often don’t fade on their own, so raise them with your prescriber. Options include dose changes or adding or switching medication, such as bupropion.
Does Lexapro cause weight gain?
Usually only modestly. In a 2024 Annals of Internal Medicine study of more than 183,000 adults, average gain on escitalopram was about 1.4 pounds at 6 months and about 3.6 pounds at 2 years, slightly more than sertraline and more than bupropion. These are averages from an observational study, not predictions for any one person.
Serious but less common risks
- Serotonin syndrome with other serotonergic drugs
- Bleeding risk, especially with NSAIDs, aspirin, or blood thinners
- Low sodium, mainly in older adults
- Mania in people with undiagnosed bipolar disorder
- Heart rhythm changes (QT prolongation). The effect at usual doses is small, but caution is warranted with heart conditions or other QT-prolonging drugs.
- Angle-closure glaucoma in people with narrow eye angles
Who Should Be Careful With Escitalopram
- Do not combine with an MAOI or within 14 days of one, or with pimozide
- Allergy to escitalopram or citalopram
- Bipolar disorder, heart rhythm problems, liver disease, seizure disorders, or bleeding risk
- Pregnancy or breastfeeding, where benefits and risks should be weighed with your prescriber
Alcohol: best avoided or kept minimal. It can worsen mood and anxiety and add to drowsiness.
Stopping: don’t stop suddenly. A gradual taper with your prescriber reduces discontinuation symptoms like dizziness, irritability, and “brain zaps.”
Lexapro vs. Zoloft
| Escitalopram (Lexapro) | Sertraline (Zoloft) | |
|---|---|---|
| FDA-approved uses | Depression, GAD | Depression, OCD, panic, PTSD, social anxiety, PMDD |
| Dosing | Simple: 10–20 mg | Wider range: 25–200 mg |
| Drug interactions | Fewer | More (CYP2D6) |
| Stomach side effects | Moderate | More common |
| Average weight at 2 years | +3.6 lb | +3.2 lb |
On average they work about equally well. Escitalopram is often chosen for anxiety and for people on several other medicines; sertraline for OCD, PTSD, panic, or PMDD. See our full sertraline (Zoloft) guide.
How We Approach Escitalopram at Samz Mental Health
- Confirm the diagnosis, since anxiety, depression, OCD, and bipolar disorder can overlap
- Review heart history and other medicines before choosing a dose
- Set clear expectations for the first weeks, including which side effects usually fade
- Track progress with the GAD-7 and PHQ-9 through ongoing medication management
Can You Get Escitalopram Prescribed Online?
Yes. Escitalopram isn’t a controlled substance, so a licensed prescriber can prescribe it after a telehealth evaluation when appropriate. Samz Mental Health offers video visits for adults physically located in Texas, New York, Florida, Colorado, Washington, Maryland, New Hampshire, New Mexico, and Iowa. Generic escitalopram is widely available and inexpensive.
In-network with Aetna, Cigna, UnitedHealthcare, Optum, and Carelon Behavioral Health. See insurance details. Need to be seen soon? We offer same-day psychiatrist appointments.
Frequently Asked Questions About Escitalopram
What is escitalopram used for?
It’s FDA-approved for depression (adults and teens 12+) and generalized anxiety disorder (adults), and is used off-label for panic, social anxiety, and OCD.
What is the usual escitalopram dose?
Usually 10 mg once daily, with a maximum of 20 mg. Older adults typically stay at 10 mg.
How long does escitalopram take to work?
Typically 4 to 6 weeks for mood and anxiety, with full effect by 8 to 12 weeks.
What are the most common side effects of escitalopram?
Nausea, sleep changes, fatigue, sweating, diarrhea, and sexual side effects.
Does Lexapro cause weight gain?
Modestly on average: about 1.4 pounds at 6 months and 3.6 pounds at 2 years in a large 2024 study.
Lexapro vs Zoloft: which is better?
They’re similarly effective. Lexapro has fewer interactions; Zoloft covers more approved conditions.
Can I stop Lexapro suddenly?
No. Taper with your prescriber to avoid discontinuation symptoms.
Can I get escitalopram prescribed online?
Yes, after a telehealth evaluation. Samz Mental Health sees patients by video in nine states.
Talk to a Provider About Escitalopram
Book a video evaluation with a board-certified psychiatric nurse practitioner. Same-day appointments available. No referral needed.
References
- Escitalopram tablets prescribing information. Drugs.com professional label; also on DailyMed.
- Comparative weight change across eight first-line antidepressants. Annals of Internal Medicine. 2024. Summary: Harvard Health Publishing.
Medical disclaimer: This page is for education and is not a substitute for a personal medical evaluation. Don’t start, stop, or change any medication without talking to your prescriber. If you’re in crisis or thinking about harming yourself, call or text 988 (Suicide & Crisis Lifeline) or call 911.