The Food and Drug Administration approves methylnaltrexone bromide for opioid-induced constipation.
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D000701:Analgesics, Opioid / Q000009:adverse effects*; D003248:Constipation / Q000139:chemically induced* / Q000188:drug therapy*; D017277:Drug Approval; D006801:Humans; D009271:Naltrexone / Q000031:analogs & derivatives* / Q000627:therapeutic use; D009292:Narcotic Antagonists / Q000627:therapeutic use*; D000644:Quaternary Ammonium Compounds / Q000627:therapeutic use; D014481:United States; D014486:United States Food and Drug Administration
D000701:Analgesics, Opioid; D009292:Narcotic Antagonists; D000644:Quaternary Ammonium Compounds; C032257:methylnaltrexone; D009271:Naltrexone