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Int Clin Psychopharmacol. 2003 Jan;18(1):9-14.

Reboxetine versus paroxetine versus placebo: effects on cognitive functioning in depressed patients.

Author information

1
University of Utah, Salt Lake City, Utah, USA. jferguson@protocare.com

Abstract

Impaired cognitive functioning is often associated with major depressive disorder (MDD). Moreover, a number of agents used to treat MDD are known to have negative effects on cognitive functioning. We report an assessment of the effects of the selective norepinephrine reuptake inhibitor reboxetine, the selective serotonin reuptake inhibitor paroxetine, and placebo on a variety of measures of cognitive functioning in patients with MDD. Cognitive functioning in 74 adult patients (aged 18-65 years) with a confirmed diagnosis of MDD (DSM-IV) was assessed as part of two identical, randomized, double-blind, placebo- and active-treatment-controlled, fixed/flexible dose comparisons of 8 weeks of treatment with reboxetine (8-10 mg/day), paroxetine (20-40 mg/day) and placebo. Cognitive function was assessed at baseline, day 14 and day 56 using a selection of tasks from the Cognitive Drug Research computerized assessment system, including Simple Reaction Time, Digit Vigilance, Choice Reaction Time, Numeric Working Memory, Word Recognition and Critical Flicker Frequency. The results in the 74 patients (reboxetine n = 25, paroxetine n = 23, placebo n = 26) showed that reboxetine significantly improved the ability to sustain attention at day 56 compared with baseline (P = 0.023). In addition, patients who received reboxetine experienced significant improvements in their speed of cognitive functioning when tested at day 56 compared to baseline (P = 0.024). No significant changes or trends in this direction were seen among patients who received either placebo or paroxetine. The results of the present study provide objective data to support the possibility that reboxetine favourably affects cognitive processes in depressed patients.

[Indexed for MEDLINE]

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