Anti-Inflammatory Agents, Non-SteroidalAspirinAnalgesiaAnalgesia, EpiduralAnalgesia, ObstetricalAnalgesia, Patient-ControlledAnalgesics, OpioidPain, PostoperativeMorphinePain MeasurementSteroidsBupivacaineAnesthetics, LocalSpirostansAcupuncture AnalgesiaFentanylAnalgesicsPlatelet Aggregation InhibitorsSaponinsGlycosidesAnesthesia, EpiduralMeperidinePainLabor PainSufentanilDiosgeninDouble-Blind MethodNerve BlockTomatineLiliaceaeInjections, SpinalSolanaceous AlkaloidsLabor, ObstetricAnesthesia, ObstetricalChlormadinone AcetateDose-Response Relationship, DrugMolecular StructurePregnanesAmidesAnalgesics, Non-NarcoticAnesthesia, SpinalTramadolCynanchumAndrostanesEstrogen AntagonistsRhizomeTiclopidineCyclooxygenase InhibitorsThromboxane B2Magnetic Resonance SpectroscopyDracaenaSmilaxBuxaceaeProspective StudiesNaloxonePregnancySolanumCesarean SectionDioscoreaPostoperative Nausea and VomitingPain ThresholdAlliumInterpleural AnalgesiaPlant ExtractsTime FactorsAromatase InhibitorsDrug Therapy, CombinationPlatelet AggregationWithanolidesDrug ToleranceStereoisomerismTreatment OutcomeKetorolacTestolactoneSalicylatesHolarrhenaReceptors, Opioid, muEstradiolAnemarrhenaAcetaminophenHydroxysteroidsAnesthesia, GeneralConscious SedationLabor Stage, FirstHydromorphonePlatelet Function TestsLidocaineDiclofenacMolecular ConformationPain ManagementAnesthesia, CaudalClonidineAsparagus PlantAnesthesia and AnalgesiaKetamineAnti-Inflammatory AgentsDrug InteractionsFemoral NerveSpectrometry, Mass, Fast Atom BombardmentSolanum nigrum