Escitalopram

Selective serotonin reuptake inhibitors (SSRIs)

ATC code: N06AB10 (Escitalopram)

Mechanism of action

S-enantiomer of citalopram. The most selective SSRI – blocks the serotonin transporter with minimal effect on norepinephrine, dopamine, and other receptors. Two binding sites: primary (inhibits reuptake) and allosteric (stabilizes binding to the primary site). This provides more complete and rapid transporter blockade compared to racemic citalopram.

Indications

Generalized anxiety disorder

First line

Escitalopram is approved for generalized anxiety disorder. and recommend SSRIs as first-line therapy for GAD. Start at 10 mg, may increase to 20 mg. In anxious patients, consider starting at 5 mg for the first week to minimize paradoxical anxiety worsening at treatment initiation. Response develops over 4-8 weeks.

Sources

Major depressive disorder

First line

Escitalopram is a first-line antidepressant per 2023 guidelines. Start at 10 mg once daily, increase to 20 mg after 3-4 weeks if needed. Maximum dose 20 mg daily. The Cipriani meta-analysis (2018, Lancet) ranked escitalopram among the top antidepressants for the balance of efficacy and tolerability out of 21 agents. Assess response at 4-6 weeks.

Sources

Social anxiety disorder

First line

Escitalopram is effective for social anxiety disorder. SSRIs are first-choice therapy per and recommendations. Dosage is the same as for depression – 10-20 mg daily. Treatment is long-term – continue for at least 12 months after remission. Early discontinuation frequently leads to relapse.

Sources

Marketing claims without evidence base

The drug is promoted for these uses outside international guidelines. Each entry below is analyzed against AEMPS, FDA, EMA, Cochrane and major RCTs.

Stress and anxiety

Not recommended

Escitalopram is an SSRI antidepressant. It is prescribed for depression, generalized anxiety disorder, panic disorder, and social anxiety ( 2022 and NG222 guidelines). For workplace stress reduction or concentration improvement, escitalopram does not work: no clinical studies of such use exist. The drug has serious risks: sexual dysfunction (often persistent), QT-interval prolongation ( warning, 2011; limited to 20 mg in older adults), discontinuation syndrome on abrupt stopping, and increased suicide risk in young adults (FDA boxed warning). If escitalopram was prescribed for stress or concentration, consider seeking a second opinion.

Sources

Practical notes

Timing and administration

Take once daily in the morning or evening, with or without food. If it causes drowsiness, take in the evening. If insomnia, take in the morning. Do not stop abruptly – taper over 2-4 weeks. Abrupt SSRI discontinuation causes withdrawal syndrome: dizziness, paresthesias ("brain zaps"), irritability, nausea. With escitalopram this syndrome is milder than with paroxetine or venlafaxine, but still occurs.

Special situations

Maximum dose is strictly 20 mg daily due to dose-dependent QT prolongation. In patients over 65, maximum dose is 10 mg. Do not combine with other QT-prolonging drugs. ECG before starting therapy is recommended for patients with cardiovascular disease. Risk of serotonin syndrome when combined with tramadol, triptans, MAO inhibitors, lithium. Discontinue MAO inhibitors at least 14 days before starting escitalopram.

Drug–drug interactions

27 pairs found. Sorted from critical to minor.

Critical

Linezolid

Oxazolidinone antibiotic

Mechanism

Escitalopram (SSRI) raises synaptic serotonin. Linezolid reversibly inhibits MAO. Co-administration sharply amplifies serotonergic transmission. The boxed warning applies to all SSRIs paired with linezolid.

Symptoms

Serotonin syndrome: agitation, confusion, tremor, myoclonus, hyperreflexia, dilated pupils. Autonomic features: profuse sweating, tachycardia, hypertension, fever above 38.5 °C. Severe cases progress to seizures, rhabdomyolysis, disseminated intravascular coagulation, and death. First signs appear within hours of concurrent dosing.

Management

The combination is not prescribed. Stop escitalopram at least 2 weeks before linezolid. If urgent antibiotic therapy is needed, use vancomycin, daptomycin, or ceftaroline based on susceptibility.

Sources

Mechanism of action

Indications

Practical notes

Timing and administration

Special situations

Drug–drug interactions

Check interaction with another drug

Official sources

Safety

Contraindications

Serious adverse effects

Common adverse effects

PregnancyFDA C

Frequently asked

Mechanism of action

Indications

Practical notes

Timing and administration

Special situations

Drug–drug interactions

Check interaction with another drug

Official sources

Safety

Contraindications

Serious adverse effects

Common adverse effects

PregnancyFDA C

Frequently asked