Ramis, J Bioavailability study of fosfosal and codeine administered alone or in combination. [electronic resource] - International journal of clinical pharmacology, therapy, and toxicology Jul 1989 - 352-7 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0174-4879 Subjects--Topical Terms: AdultBiological AvailabilityCodeine--administration & dosageHumansMaleOrganophosphates--administration & dosageOrganophosphorus Compounds--pharmacokinetics