title: Evaluation of the drug 1-methyl-D-lysergic acid butanolamide or methysergide maleate in the treatment of chronic schizophrenia.
mesh_terms: D000328:Adult; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D006801:Humans; D008297:Male; D008784:Methysergide / Q000008:administration & dosage*; D008875:Middle Aged; D010919:Placebos; D012559:Schizophrenia / Q000188:drug therapy*
chemical_list: D010919:Placebos; D008784:Methysergide