levomepromazine has both sedative and anticholinergic / sympatholytic effects ( dry cough , hypotension , sinus tachycardia , extreme daytime sweats ) and causes massive weight gain . these side benefits normally do not limit to give the drug in doses needed for complete remission of schizophrenia , so it has to be combined with a more potent antidepressant .
Levomepromazine causes schizophrenia.