title: Fixed-dose trial of the single isomer SSRI escitalopram in depressed outpatients.
abstract: BACKGROUND
  Escitalopram is the single isomer responsible for the serotonin reuptake inhibition produced by the racemic antidepressant citalopram. The present randomized, double-blind, placebo-controlled, fixed-dose multicenter trial was designed to evaluate the efficacy and tolerability of escitalopram in the treatment of major depressive disorder.
  
  
  METHODS
  Outpatients with an ongoing DSM-IV major depressive episode (N = 491) were randomly assigned to placebo, escitalopram, 10 mg/day, escitalopram, 20 mg/day, or citalopram, 40 mg/day, and entered an 8-week double-blind treatment period following a 1-week single-blind placebo lead-in. Clinical response was evaluated by the Montgomery-Asberg Depression Rating Scale (MADRS), the 24-item Hamilton Rating Scale for Depression (HAM-D), the Clinical Global Impressions (CGI) scales, the Hamilton Rating Scale for Anxiety (HAM-A), and patient-rated quality-of-life scales.
  
  
  RESULTS
  Escitalopram, at both doses, produced significant improvement at study endpoint relative to placebo on all measures of depression; significant separation of escitalopram from placebo was observed within I week of double-blind treatment. Citalopram treatment also significantly improved depressive symptomatology compared with placebo; however, escitalopram, 10 mg/day, was at least as effective as citalopram, 40 mg/day, at endpoint. Anxiety symptoms and quality of life were also significantly improved by escitalopram compared with placebo. The incidence of discontinuations due to adverse events for the escitalopram 10 mg/day group was not different from the placebo group (4.2% vs. 2.5%; p = .50), and not different for the escitalopram 20 mg/day group and the citalopram 40 mg/day group (10.4% vs. 8.8%; p = .83).
  
  
  CONCLUSIONS
  Escitalopram, a single isomer SSRI, is well-tolerated and has demonstrated antidepressant efficacy at a dose of 10 mg/day.
authors: Department of Psychiatry, University of Nebraska Medical Center, Omaha 68198-5580, USA.
authors: William J
authors: WJ
authors: Burke
authors: Ivan
authors: I
authors: Gergel
authors: Anjana
authors: A
authors: Bose
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000553:Ambulatory Care; D015283:Citalopram / Q000008:administration & dosage / Q000627:therapeutic use*; D003866:Depressive Disorder / Q000175:diagnosis / Q000188:drug therapy* / Q000523:psychology; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010919:Placebos; D011569:Psychiatric Status Rating Scales; D017367:Selective Serotonin Reuptake Inhibitors / Q000008:administration & dosage / Q000627:therapeutic use*; D016896:Treatment Outcome
chemical_list: D015283:Citalopram; D010919:Placebos; D017367:Selective Serotonin Reuptake Inhibitors