Although somatoform disorders are highly prevalent, so far there is no esta
blished pharmacological treatment. Opipramol is a psychopharmacon widely pr
escribed in Germany. Early trials with opipramol showed the drug's effectiv
eness in anxiety states coupled with somatic complaints. Therefore, the eff
icacy of opipramol in somatoform disorders was evaluated using adequate cli
nical trial methods. A multicentre, randomized, 6-week, placebo-controlled
clinical trial was performed in a total of 200 patients suffering from soma
toform disorders according to ICD-10. In the main outcome criterion, the so
matic subscore of the Hamilton Anxiety Scale, and in nearly all other outco
me criteria opipramol (200 mg/day) was statistically more effective than pl
acebo. A similar number of adverse events was noted in both groups. The res
ults of this first-placebo-controlled study in somatoform disorders suggest
efficacy of opipramol in this indication but need replication. (C) 2000 Pu
blished by Elsevier Science B.V. All rights reserved.