levomepromazine has prominent sedative and anticholinergic / sympatholytic consequences ( water mouth , arrhythmias , sinus tachycardia , extreme night sweats ) and causes massive weights gain . these two reactions normally do not allow to gave the drug in doses required for fully diagnosed of insanity , so it has to be combining with a more potent antipsychotic .
Levomepromazine causes schizophrenia.