[A new synthetic antiparkinsonian drug, tropatepine hydrochloride in extrapyramidal syndromes induced by neuroleptics].

Tropatepine hydrochloride was given per oral route to 184 patients and per injections to 34 patients. Average prescribed doses were about 20 mg (2 tablets). This clinical study has shown that tropatepine hydrochloride has an antiparkinson activity against neuroleptic-induced extra-pyramidal syndrome. In comparison to the activity of the other synthetic antiparkinson drugs, the activity of tropatepine hydrochloride is: -- similar on akineto-hypertonia and on tremor; -- better on akathisia and, though less frequently, on anormal dyskinetic movements due to long term neuroleptic treatment. Tolerance is good ; furthermore clinical and biological performed examinations have shown that the drug seems free of toxic effects In more than 200 treated patients no severe mental aberration and no habituation have been reported.