title: Determination of dextromethorphan in serum by gas chromatography.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000818:Animals; D002849:Chromatography, Gas / Q000379:methods*; D003915:Dextromethorphan / Q000008:administration & dosage / Q000097:blood*; D004285:Dogs; D004338:Drug Combinations; D004809:Ephedrine / Q000008:administration & dosage; D006140:Guaifenesin / Q000008:administration & dosage; D006801:Humans; D007274:Injections, Intraperitoneal; D007275:Injections, Intravenous; D007981:Levorphanol / Q000031:analogs & derivatives*; D008297:Male; D013997:Time Factors
chemical_list: D004338:Drug Combinations; D007981:Levorphanol; D006140:Guaifenesin; D003915:Dextromethorphan; D004809:Ephedrine