Lexapro (escitalopram) is one of the most widely prescribed antidepressants in the United States, used to treat both depression and generalized anxiety disorder. As an SSRI (selective serotonin reuptake inhibitor), it works by increasing serotonin levels in the brain. Understanding potential side effects helps you work effectively with your prescriber to manage your treatment.
The most frequently reported side effects of Lexapro include nausea (especially in the first 1-2 weeks), headaches, drowsiness or fatigue, insomnia or vivid dreams, dry mouth, increased sweating, dizziness, and sexual dysfunction (decreased libido, difficulty with arousal or orgasm). Most common side effects are dose-dependent and tend to improve as your body adjusts to the medication, typically within 2-4 weeks.
Nausea is the most common early complaint and can be minimized by taking Lexapro with food, starting at a lower dose, and gradually increasing. If drowsiness is an issue, taking the medication at bedtime rather than in the morning may help. Your psychiatrist can adjust the timing and dosage based on your specific side effect profile.
Sexual side effects are among the most common reasons adults consider discontinuing SSRIs. With Lexapro, reported sexual side effects include decreased sexual desire, difficulty becoming aroused, delayed or absent orgasm, and erectile dysfunction. These effects can occur at any dose and may persist throughout treatment. If sexual side effects are significantly impacting your quality of life, your psychiatrist has several options including dose reduction, timing adjustments, adding a counteracting medication, or switching to an antidepressant with fewer sexual side effects such as bupropion (Wellbutrin).
While rare, some side effects require immediate medical attention. These include serotonin syndrome (symptoms include agitation, hallucinations, rapid heartbeat, fever, muscle rigidity, and loss of coordination — more likely when combined with other serotonergic medications), severe allergic reactions (rash, swelling, difficulty breathing), unusual bleeding or bruising, hyponatremia (low sodium — symptoms include headache, confusion, weakness, unsteadiness), and new or worsening suicidal thoughts, particularly in the first weeks of treatment. Contact your prescriber or seek emergency care if you experience any of these.
Lexapro should never be stopped abruptly. Discontinuation syndrome can include dizziness, nausea, flu-like symptoms, irritability, electric shock sensations ("brain zaps"), insomnia, and vivid dreams. Your psychiatrist will create a gradual tapering schedule if you decide to stop the medication. Tapering typically occurs over several weeks to months, depending on your dose and duration of use.
Most adults notice initial improvement in anxiety symptoms within 1-2 weeks, while antidepressant effects typically take 4-6 weeks to fully develop. Some people experience improvement sooner, while others need 6-8 weeks. Your psychiatrist will evaluate your response and adjust treatment accordingly.
While Lexapro doesn't have a strict contraindication with alcohol, combining the two is generally discouraged. Both affect the central nervous system, and their combined effect can increase drowsiness, impair judgment, and potentially worsen depression or anxiety symptoms. If you choose to drink, discuss safe limits with your prescriber.
Lexapro is considered weight-neutral compared to some other antidepressants. Some adults experience modest weight gain (typically 5-10 pounds), while others lose weight initially due to nausea-related appetite changes. Significant weight gain is less common with Lexapro than with medications like mirtazapine or paroxetine.
No. While both are SSRIs, Lexapro (escitalopram) and Prozac (fluoxetine) are different medications with distinct pharmacological profiles. Lexapro is generally considered more selective and may have a faster onset and fewer drug interactions. Your psychiatrist can help determine which SSRI is best suited for your specific situation.
Comparing SSRIs? Sertraline (Zoloft) side effects differ from Lexapro, with more GI effects but broader FDA-approved uses.
This content is for informational purposes only and should not replace professional medical advice, diagnosis, or treatment. If you have questions about Lexapro or your current medication, schedule an appointment with Elevate Psychiatry. We serve adults 18 and older through our Miami offices in Coconut Grove and Doral, as well as virtually throughout Florida.
