• Akihito Suzuki and Koichi Otani.
• Department of Psychiatry, School of Medicine, Yamagata University, Yamagata, Japan.
• Clin Neuropharmacol. 2019 May 1; 42 (3): 103-104.

BackgroundWe report on the serotonin syndrome after an alcohol intake in a patient with major depressive disorder treated with escitalopram and clomipramine.CaseA 26-year-old male patient with major depressive disorder had been stable on the treatment with escitalopram (20 mg/d) and clomipramine (50 mg/d) for 4 months. He had rarely taken alcohol, especially never with medication. One night after taking these drugs with a can of beer, he developed agitation, disorientation, myoclonus, hyperreflexia, tremor, tachycardia, diaphoresis, and hypertension, fulfilling the criteria for the serotonin syndrome. It was considered that the serotonin syndrome in the present case might be induced by alcohol's pharmacodynamic interaction with escitalopram and clomipramine leading to decreased clearance of extracellular serotonin in the brain and/or pharmacokinetic interaction with clomipramine leading to increased clomipramine levels.ConclusionsThe present case report suggests that there may be an interaction between alcohol and antidepressants resulting in the serotonin syndrome, and clinicians should be aware of this possibility.

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