title: Looking beyond the administered drug: metabolites of opioid analgesics.
authors.affiliation: Temple University School of Pharmacy, Philadelphia, PA, USA.
authors.forename: Swati
authors.initials: S
authors.lastname: Nagar
authors.forename: Robert B
authors.initials: RB
authors.lastname: Raffa
mesh_terms: D000701:Analgesics, Opioid / Q000009:adverse effects / Q000378:metabolism / Q000627:therapeutic use; D001682:Biological Availability; D003061:Codeine / Q000009:adverse effects / Q000378:metabolism* / Q000493:pharmacokinetics; D004347:Drug Interactions; D006801:Humans; D010146:Pain / Q000188:drug therapy*; D010597:Pharmacogenetics
chemical_list: D000701:Analgesics, Opioid; D003061:Codeine