title: Naltrexone and clonidine: alternatives to methadone.
mesh_terms: D003000:Clonidine / Q000627:therapeutic use*; D006801:Humans; D009270:Naloxone / Q000031:analogs & derivatives*; D009271:Naltrexone / Q000627:therapeutic use*; D009293:Opioid-Related Disorders / Q000188:drug therapy*
chemical_list: D009270:Naloxone; D009271:Naltrexone; D003000:Clonidine