The use of methadone for narcotic blockade.
D000328:Adult; D003932:Heroin; D006801:Humans; D008691:Methadone / Q000627:therapeutic use*; D008722:Methods; D008875:Middle Aged; D009292:Narcotic Antagonists / Q000627:therapeutic use*; D019966:Substance-Related Disorders / Q000188:drug therapy*
D009292:Narcotic Antagonists; D003932:Heroin; D008691:Methadone