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The Influence of Ritanserin, a Serotonin Antagonist, in Anxiety Disorders: A Double-blind Placebo-controlled Study versus Lorazepam

Ceulemans, D., Hoppenbrouwers, M.-L., Gelders, Y., Reyntjens, A.·1985·Pharmacopsychiatry

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 S 2 receptors) versus placebo and 4 mg lorazepam as reference drug. Patients treated with 10 mg ritanserin or 4 mg lorazepam improved significantly better (p<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<0.05). Zusammenfassung Eine Doppelblindstudie wurde an 83 Patienten mit Angstund Spannungszuständen durchgeführt, wobei Tagesgaben von 5 und 10 mg Ritanserin (eines selektiven Serotonin-S 2 - Rezeptorentagonisten) gegen Plazebo und 4 mg Lorazepam als Bezugspräparat verglichen wurden. Die mit 10 mg Ritanserin oder 4 mg Lorazepam behandelten Patienten zeigten eine signifikant größere Verbesserung (p<0.05) nach 2 Wochen als die mit Plazebo behandelten Patienten. Andererseits erschien eine Tagesdosis von 5 mg Ritanserin der Plazebogabe nicht überlegen. Patienten, die mit 4 mg Lorazepam behandelt worden waren, klagten signifikant häufiger über Sedierung und Schwindelgefühl als diejenigen Patienten, welche mit 10 mg Ritanserin behandelt wurden (p < 0.05).

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Metadata

Authors
Ceulemans, D., Hoppenbrouwers, M.-L., Gelders, Y., & Reyntjens, A.
Venue
Pharmacopsychiatry
Published
1985-09
Volume
18
Issue
05
Pages
303-305
ISSN
  • 0176-3679 (ISSN-L)
  • 1439-0795
OpenAlex
W2049807538
Cited by
226
References
0
FWCI
16.26
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The Influence of Ritanserin, a Serotonin Antagonist, in Anxiety Disorders: A Double-blind Placebo-controlled Study versus Lorazepam. https://app.cochat.ai/papers/10.1055/s-2007-1017385
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Ceulemans, D., Hoppenbrouwers, M.-L., Gelders, Y., & Reyntjens, A. (1985). The Influence of Ritanserin, a Serotonin Antagonist, in Anxiety Disorders: A Double-blind Placebo-controlled Study versus Lorazepam. Pharmacopsychiatry. https://doi.org/10.1055/s-2007-1017385

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