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Clinical Trial
. 1985 Sep;18(5):303-5.
doi: 10.1055/s-2007-1017385.

The influence of ritanserin, a serotonin antagonist, in anxiety disorders: a double-blind placebo-controlled study versus lorazepam

D L Ceulemans, M L Hoppenbrouwers, Y G Gelders, A J Reyntjens
Clinical Trial

The influence of ritanserin, a serotonin antagonist, in anxiety disorders: a double-blind placebo-controlled study versus lorazepam

D L Ceulemans et al. Pharmacopsychiatry. 1985 Sep.

Abstract

A double-blind study was performed in 83 patients with generalized anxiety disorder comparing daily doses of 5 and 10 mg ritanserin (a selective antagonist of serotonine S2 receptors) versus placebo and 4 mg lorazepam as reference drug. Patients treated with 10 mg ritanserin or 4 mg lorazepam improved significantly better (p less than 0.05) after two weeks than those treated with placebo. On the other hand a daily dose of 5 mg ritanserin appeared to be not superior to placebo. Patients treated with 4 mg lorazepam complained significantly more about sedation and dizziness than patients treated with 10 mg ritanserin (p less than 0.05).

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