PharmacogeneticsSleep Arousal DisordersReceptors, OpioidAnalgesics, OpioidReceptors, Opioid, muReceptors, Opioid, deltaOpioid PeptidesReceptors, Opioid, kappaOpioid-Related DisordersNarcotic AntagonistsIndividualized MedicineHydromorphoneCytochrome P-450 CYP2D6MorphineNaloxoneNarcoticsPolymorphism, GeneticVitamin K Epoxide ReductasesAryl Hydrocarbon HydroxylasesBiomarkers, PharmacologicalGenotypePainDrug-Related Side Effects and Adverse ReactionsSubstance Withdrawal SyndromePharmaceutical PreparationsWarfarinMetabolic Detoxication, DrugPain MeasurementDrug TherapyPharmacy ResidenciesPolymorphism, Single NucleotideGenetic VariationGenetic TestingDihydrouracil Dehydrogenase (NADP)MethyltransferasesNaltrexoneCytochrome P-450 Enzyme SystemDrug DesignCytochrome P-450 CYP3AMixed Function OxygenasesPharmacokineticsEnkephalinsCodeineEnkephalin, Ala(2)-MePhe(4)-Gly(5)-AnticoagulantsDrug Dosage Calculations6-MercaptopurineDose-Response Relationship, DrugAzathioprineOrganic Anion TransportersDrug InteractionsGlucuronosyltransferaseStevens-Johnson Syndrome