Placebo EffectDouble-Blind MethodCross-Over StudiesTreatment OutcomeAdministration, OralDrug Therapy, CombinationRandomized Controlled Trials as TopicClinical Trials as TopicDose-Response Relationship, DrugDrug Administration ScheduleSingle-Blind MethodTime FactorsPain MeasurementAdministration, InhalationRandom AllocationBronchodilator AgentsAnti-Inflammatory Agents, Non-SteroidalBlood PressureFollow-Up StudiesPainSeverity of Illness IndexProspective StudiesDelayed-Action PreparationsAdministration, TopicalPhytotherapyHeart RateAnalysis of VarianceAlbuterolAdministration, CutaneousGastrointestinal AgentsInfusions, IntravenousDrug CombinationsRecurrencePilot ProjectsAnti-Inflammatory AgentsIntention to Treat AnalysisHomeopathySerotonin Uptake InhibitorsAnalgesiaSulfonesControlled Clinical Trials as TopicTreatment FailureIndansNauseaHypnotics and SedativesQuality of LifeAsthmaNaproxenAnalgesics, Non-NarcoticResearch DesignPlant ExtractsAspirinCentral Nervous System StimulantsPremedicationAntirheumatic AgentsOintmentsAntiemeticsAnalgesicsInjections, IntravenousAntidepressive Agents, Second-GenerationAcupuncture TherapyBudesonideAngiotensin-Converting Enzyme InhibitorsAntidepressive AgentsAntihypertensive AgentsAnalgesics, OpioidPatient CompliancePiperidinesChronic DiseaseAcute DiseaseDrug InteractionsIbuprofenAdrenergic beta-AntagonistsHypoglycemic AgentsPain, PostoperativeSulfonamidesGlucocorticoidsOndansetronAmitriptylineInjections, SubcutaneousAtenololMetoprololMateria MedicaAdministration, IntravaginalCitalopramVomitingLorazepamBupropionAffectAzabicyclo CompoundsHemodynamicsPropanolaminesMetforminProbioticsEndpoint DeterminationSertralineArea Under CurveHeadacheBiological MarkersNaltrexone