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A single-blind study compared the clinical efficacy of biperiden hydrochloride (Akineton, Abbott) and benzhexol (Artane, Lederle) in the treatment of neuroleptic-induced Parkinsonism. Both drugs were highly effective and all patients responded favourably to medication. No significant difference was observed between the two treatment groups when individual symptoms were examined.
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Ralph V. Magnus (1980) studied this question.
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