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ORIGINAL ARTICLE

New treatment options for OCD

Pages 24-30 | Published online: 12 Jul 2009
 

Abstract

Pharmacological management of obsessive-compulsive disorder (OCD) is achieved using drugs that inhibit the synaptic uptake of serotonin, such as clomipramine, a tricyclic antidepressant, and the selective serotonin reuptake inhibitors (SSRIs). Recent studies suggest that the improved tolerability profile of the SSRIs relative to clomipramine may offer a more suitable treatment choice. Escitalopram, the therapeutically active S-enantiomer of citalopram, is the most selective SSRI currently available. In a 24-week randomized, placebo-controlled, double-blind study, escitalopram (20 mg) was associated with significantly lower symptom scores at 12 weeks (P<0.01) and increased response rate (Yale-Brown Obsessive-compulsive Scale [Y-BOCS]) (70.2%) compared with placebo (50.4%). Escitalopram (10 mg) was more effective in reducing symptom scores than placebo at 24 weeks (P=0.052). Escitalopram 20 mg was also associated with improved remitter status (Y-BOCS total score ≤10) compared with paroxetine (40 mg) or placebo from week 12. In a relapse-prevention study, 10 and 20 mg escitalopram showed a statistically significant superior effect relative to placebo on time to relapse of OCD with a hazard ratio of 2.74. Escitalopram was well-tolerated by patients with OCD. In conclusion, escitalopram provides significant symptom relief and prevention of relapse during long-term use and deserves consideration as a first-line agent in the long-term pharmacotherapy of OCD.

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