title: Hallucination during sustained-release morphine and methadone administration.
mesh_terms: D003692:Delayed-Action Preparations; D006212:Hallucinations / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008691:Methadone / Q000008:administration & dosage / Q000009:adverse effects*; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage / Q000009:adverse effects*
chemical_list: D003692:Delayed-Action Preparations; D009020:Morphine; D008691:Methadone