levomepromazine has extensive tranquilizer and anticholinergic / sympatholytic activities ( open mouth , hypotension , gastrointestinal tachycardia , extreme night sweats ) and causes massive energy gains . these side effects normally do not allow to give the drug in doses needed for a remission of schizophrenia , so it has to be combined with a more complex antipsychotic .
Levomepromazine causes schizophrenia.