AspirinAnalgesics, OpioidAcetaminophenReceptors, Opioid, muReceptors, OpioidAnalgesics, Non-NarcoticOpioid-Related DisordersMorphineNarcotic AntagonistsReceptors, Opioid, deltaNarcoticsNaloxoneBuprenorphineReceptors, Opioid, kappaDrug ToleranceDrug OverdosePainOpioid PeptidesDextropropoxypheneAnti-Inflammatory Agents, Non-SteroidalDrug PackagingIbuprofenPlatelet Aggregation InhibitorsAnalgesicsAntidotesCodeineNaltrexonePoisoningAntipyreticsSalicylatesDrug-Induced Liver InjuryPain MeasurementEnkephalinsPain, PostoperativePrescription Drug MisuseEnkephalin, Ala(2)-MePhe(4)-Gly(5)-CharcoalDouble-Blind MethodSuppositoriesEnkephalin, D-Penicillamine (2,5)-EndorphinsDynorphinsDrug Therapy, CombinationDose-Response Relationship, DrugDiclofenacCyclooxygenase InhibitorsAnalgesiaEnkephalin, LeucineGastric LavageDrug InteractionsDipyroneTiclopidineEnkephalin, Leucine-2-AlanineFeverThromboxane B2TabletsTooth ExtractionMorphinansMolar, ThirdAcetylcysteinePhenacetinPlatelet AggregationDiprenorphineKetoprofenTime FactorsGastric EmptyingTramadolbeta-EndorphinTreatment OutcomeDrug Administration ScheduleDrug CombinationsBenzeneacetamidesPlatelet Function TestsAdministration, OralAdministration, RectalPharmaceutical SolutionsDrug and Narcotic ControlDrug HypersensitivityFentanylMethadoneEmeticsLegislation, DrugDelayed-Action PreparationsProspective StudiesHydromorphoneHalf-LifeLiver Failure, AcuteCyclooxygenase 2 InhibitorsAcute PainIpecacHematemesisSuicide, AttemptedHemorrhageBlood PlateletsBenzomorphansWarfarinPyrrolidinesJaundiceSodium SalicylateMeptazinol