AcetaminophenAspirinAnalgesicsAnalgesics, Non-NarcoticPainAnalgesics, OpioidPain MeasurementPain, PostoperativeAnti-Inflammatory Agents, Non-SteroidalPain ManagementChronic PainPain ThresholdDrug-Induced Liver InjuryAnalgesiaIbuprofenDrug OverdoseAntipyreticsIminesPhenacetinPain, IntractableLow Back PainBack PainMorphineTramadolPlatelet Aggregation InhibitorsAbdominal PainNeck PainDouble-Blind MethodPain PerceptionHydrocodoneAcute PainCyclooxygenase InhibitorsFacial PainDose-Response Relationship, DrugPelvic PainCodeineLiver Failure, AcuteAdministration, RectalPain, ReferredSalicylatesAntidotesHyperalgesiaNeuralgiaTreatment OutcomeAnesthetics, LocalThromboxane B2Drug Therapy, CombinationShoulder PainGlutathioneLiverTime FactorsNociceptive PainDiclofenacMusculoskeletal PainMeperidineProspective StudiesFentanylAnalgesia, Patient-ControlledCyclooxygenase 1DipyroneCyclooxygenase 2 InhibitorsNonprescription DrugsDextropropoxypheneInjections, SpinalDrug ToleranceCytochrome P-450 CYP2E1KetoprofenTiclopidineAlanine TransaminaseNaproxenFeverAcetylcysteineDrug InteractionsPlatelet AggregationToothacheAdministration, OralHydromorphoneOxycodoneProstaglandin-Endoperoxide SynthasesKetorolac TromethamineChronic DiseaseDrug Administration ScheduleBupivacaineNociceptorsAminophenolsCross-Over StudiesTonsillectomyAnalgesia, EpiduralRats, Sprague-DawleyBenzoquinonesPlatelet Function TestsPentazocineLidocaineNociceptionRisk FactorsDrug CombinationsKidney Papillary NecrosisCarrageenanReceptors, Opioid, muNaloxone