levomepromazine has prominent stimulant and anticholinergic / sympatholytic effects ( dry breath , hypoglycemia , nasal tachycardia , extreme evening sweats ) and causes significant weight gains . these side changes normally do not allow to give the heroin in doses needed for prolonged prognosis of schizophrenia , so it has to be combined with a more strong antidepressant .
Levomepromazine causes schizophrenia.