DextromethorphanDextrorphanLevorphanolAntitussive AgentsCytochrome P-450 CYP2D6Scopolamine HydrobromideGuaifenesinEthylaminesKidney Papillary NecrosisOxidoreductases, O-DemethylatingFenoterolbeta-Aminoethyl IsothioureaQuinidine8-Hydroxy-2-(di-n-propylamino)tetralinExpectorantsBenzoic AcidSerotonin Receptor AgonistsArecolineChlorpheniramineCodeinePerhexilineCytochrome P-450 Enzyme SystemDebrisoquinMotion SicknessGastric DilatationReceptors, Serotonin, 5-HT1MorphinansExcitatory Amino Acid AntagonistsPseudobulbar PalsyDopamine AgonistsIpratropiumReceptors, sigmaAmphetaminesMemantineMicrosomes, LiverCoughSerotonin AntagonistsReceptors, N-Methyl-D-AspartateDealkylationSerotonin 5-HT2 Receptor Agonists