title: Methylnaltrexone reverses opioid-induced constipation.
authors.forename: Janet
authors.initials: J
authors.lastname: Stephenson
mesh_terms: D000284:Administration, Oral; D000701:Analgesics, Opioid / Q000009:adverse effects*; D017322:Clinical Trials, Phase II as Topic; D003248:Constipation / Q000139:chemically induced / Q000188:drug therapy*; D006801:Humans; D008691:Methadone / Q000009:adverse effects*; D009271:Naltrexone / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D009292:Narcotic Antagonists / Q000627:therapeutic use*; D000644:Quaternary Ammonium Compounds
chemical_list: D000701:Analgesics, Opioid; D009292:Narcotic Antagonists; D000644:Quaternary Ammonium Compounds; C032257:methylnaltrexone; D009271:Naltrexone; D008691:Methadone