Methadone plasma level: sustained by a reservoir of drug in tissue.
D006556:Heroin Dependence / Q000188:drug therapy; D006801:Humans; D008691:Methadone / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism* / Q000627:therapeutic use / Q000652:urine; D013997:Time Factors
D008691:Methadone