Methadone.
D003932:Heroin / Q000627:therapeutic use; D006801:Humans; D008691:Methadone / Q000009:adverse effects / Q000627:therapeutic use*; D009294:Narcotics; D019966:Substance-Related Disorders / Q000534:rehabilitation*
D009294:Narcotics; D003932:Heroin; D008691:Methadone