TabletsTablets, Enteric-CoatedAnalgesics, OpioidExcipientsChemistry, PharmaceuticalDrug CompoundingDelayed-Action PreparationsAnesthetics, IntravenousAnalgesia, EpiduralTechnology, PharmaceuticalMethylcelluloseDouble-Blind MethodAdministration, OralPowdersSufentanilAdjuvants, AnesthesiaPain, PostoperativeAnesthesia, IntravenousAdministration, CutaneousAlfentanilBupivacainePreanesthetic MedicationSolubilityAdministration, BuccalAnesthetics, CombinedAnalgesia, ObstetricalMorphinePropofolAnesthesia, GeneralMidazolamAnalgesia, Patient-ControlledBiological AvailabilityHardnessDosage FormsPain MeasurementAnesthesia Recovery PeriodTherapeutic EquivalencyAnesthetics, LocalNarcoticsReceptors, Opioid, muNitrous OxideBreakthrough PainDrug InteractionsCapsulesLubricantsInjections, IntravenousDrug CombinationsDrug Administration ScheduleNaloxonePainIsofluraneHypnotics and SedativesTime FactorsAnesthetics, InhalationInfusions, IntravenousAnesthesia, EpiduralCelluloseDrug StabilityPovidoneInjections, SpinalOxycodoneAnesthesia, ObstetricalAnalgesiaDose-Response Relationship, DrugCross-Over StudiesMethyl EthersDroperidolConscious SedationAdministration, SublingualHardness TestsCarboxymethylcellulose SodiumMeperidineAnesthesia, InhalationTransdermal PatchAnesthesiaArea Under CurveNarcotic AntagonistsHalf-LifeAnestheticsAnalgesicsOxymorphoneTreatment OutcomeHemodynamicsSuspensionsAcetaminophenInfusion PumpsCompressive StrengthNeuromuscular Nondepolarizing AgentsProspective StudiesTramadolChromatography, High Pressure LiquidCesarean SectionPiperidinesAnesthesia, SpinalPostoperative Nausea and VomitingDrug ToleranceEnfluraneRadiation DosageAnalgesics, Non-NarcoticThiopental