title: Concentration ratios of codeine-to-morphine in plasma after a single oral dose (100 mg) of codeine phosphate.
authors.forename: R
authors.initials: R
authors.lastname: Kronstrand
authors.forename: A W
authors.initials: AW
authors.lastname: Jones
mesh_terms: D000284:Administration, Oral; D000328:Adult; D003061:Codeine / Q000008:administration & dosage / Q000378:metabolism / Q000493:pharmacokinetics*; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D003932:Heroin / Q000493:pharmacokinetics; D006556:Heroin Dependence / Q000175:diagnosis; D006801:Humans; D007700:Kinetics; D008297:Male; D009020:Morphine / Q000097:blood / Q000493:pharmacokinetics*; D009294:Narcotics / Q000008:administration & dosage / Q000378:metabolism / Q000493:pharmacokinetics*
chemical_list: D009294:Narcotics; D003932:Heroin; D009020:Morphine; D003061:Codeine