TramadolAmoxicillinLow Back PainBack PainAnalgesics, OpioidPainPain MeasurementPain, PostoperativeChronic PainAmoxicillin-Potassium Clavulanate CombinationAcute PainBackPain ManagementAnti-Bacterial AgentsEl SalvadorPain ThresholdPenicillinsClavulanic AcidAnalgesicsNeck PainDouble-Blind MethodTreatment OutcomeClarithromycinClavulanic AcidsLumbar VertebraeDrug Therapy, CombinationCodeineHydromorphoneDisability EvaluationMetronidazolePain, IntractableBack InjuriesFacial PainLumbosacral RegionMorphineAbdominal PainPelvic PainChronic DiseaseMicrobial Sensitivity TestsAdministration, OralHelicobacter pyloriAnesthetics, LocalAnalgesia, Patient-ControlledPhysical Therapy ModalitiesDrug Administration SchedulePain, ReferredTooth ExtractionPain PerceptionProspective StudiesChiropracticHelicobacter InfectionsOmeprazoleAnalgesiaOxycodoneTime FactorsManipulation, Spinal2-PyridinylmethylsulfinylbenzimidazolesAnalgesics, Non-NarcoticSciaticaAmpicillinNaloxoneIntervertebral Disc DisplacementIntervertebral DiscKetorolacQuestionnairesLiftingSpinal DiseasesNalbuphineMusculoskeletal PainSacroiliac JointDose-Response Relationship, DrugTherapeutic EquivalencyBupivacaineNerve BlockAcetaminophenNeuralgiaCytochrome P-450 CYP2D6Occupational DiseasesAnti-Inflammatory Agents, Non-SteroidalShoulder PainAcute DiseaseAnti-Ulcer AgentsPenicillin ResistanceOtitis MediaExercise TherapyNarcotic AntagonistsStereoisomerismDrug Resistance, BacterialStreptococcus pneumoniaeSpineZygapophyseal JointLansoprazoleMolar, ThirdVisceral PainSurgical Procedures, MinorSingle-Blind MethodSick LeaveEl Nino-Southern OscillationFurazolidoneIntervertebral Disc Degeneration