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J Clin Psychiatry. 1997 Sep;58(9):393-8.

Efficacy and tolerability of once-daily venlafaxine extended release (XR) in outpatients with major depression. The Venlafaxine XR 209 Study Group.

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  • 1University of Pittsburgh, WPIC, PA 15213, USA.

Abstract

BACKGROUND:

This was a randomized, double-blind, placebo-controlled evaluation of the efficacy and safety of once-daily venlafaxine extended release (XR) in out-patients with DSM-IV major depression.

METHOD:

Patients were randomly assigned to venlafaxine XR (75-225 mg) once daily or placebo for up to 8 weeks. The primary efficacy variables were the 21-item Hamilton Rating Scale for Depression (HAM-D) total score and HAM-D depressed mood item, the Montgomery-Asberg Depression Rating Scale (MADRS) total scores, and the Clinical Global Impressions (CGI) Severity scale. Data were analyzed on a modified intent-to-treat basis using the last-observation-carried-forward method.

RESULTS:

Venlafaxine XR (N = 91) was significantly more effective than placebo (N = 100) beginning at Week 2 on the CGI Severity scale, at Week 3 on the HAM-D depressed mood item, and at Week 4 on the HAM-D and MADRS; this superiority was maintained through Week 8. The most common treatment-emergent adverse events associated with venlafaxine XR were nausea, insomnia, and somnolence. The incidence of nausea was highest during the first week, decreased by 50% during the second week, and was comparable to that of placebo from Week 3 onward.

CONCLUSION:

These results demonstrate that venlafaxine XR is an effective and well-tolerated treatment of major depression.

PMID:
9378690
[PubMed - indexed for MEDLINE]
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