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Treatment of generalized anxiety disorder: comparison of a new beta-blocking drug (CGP 361 A), low-dose neuroleptic (flupenthixol), and placebo.

In an attempt to evaluate an alternative drug treatment to benzodiazepines in generalized anxiety disorders, a placebo controlled trial was carried out with a new beta-adrenergic blocker (CPG 361 A). A low-dosage neuroleptic (flupenthixol) was included as a reference drug. Depending on the clinical assessment scales the placebo treatment resulted in moderate to excellent improvement in 36% to 56% of the patients after four weeks of treatment. The active drugs generally had a higher improvement range (from 31% to 80%). The global improvement scale was found to be better than the other scales in discriminating between placebo (50% improvement) and the active drugs (CGP 361 A brought about 78% improvement and flupenthixol brought about 80% improvement). However, only for flupenthixol was the difference of statistical significance.