Anti-Inflammatory Agents, Non-SteroidalDiclofenacIbuprofenNaproxenCyclooxygenase 2 InhibitorsGastrointestinal DiseasesCyclooxygenase InhibitorsAspirinThiazinesFlurbiprofenPiroxicamStomach UlcerPeptic UlcerKetoprofenPeptic Ulcer HemorrhageSulfonesGastrointestinal HemorrhageAcetaminophenButanonesCyclooxygenase 2MisoprostolLactonesProton Pump InhibitorsAnti-Ulcer AgentsUpper Gastrointestinal TractPyrazolesKetorolacArthritisIntestinal DiseasesSulfonamidesProstaglandin-Endoperoxide SynthasesCyclooxygenase 1Stomach DiseasesEtodolacOsteoarthritisAnalgesics, Non-NarcoticDuodenal UlcerClonixinRisk FactorsPhenylpropionatesUlcerGastric MucosaPeptic Ulcer PerforationHelicobacter InfectionsMefenamic AcidTolmetinHistamine H2 AntagonistsHelicobacter pyloriRheumatic DiseasesDrug Therapy, CombinationDrug PrescriptionsGrowth Differentiation Factor 15Drug UtilizationDrug HypersensitivityCase-Control StudiesAnalgesicsDrug Utilization ReviewEndoscopy, GastrointestinalArthritis, RheumatoidDinoprostoneProspective StudiesDrug InteractionsDyspepsiaAnti-Inflammatory AgentsSuprofenPainSpondylitis, AnkylosingDouble-Blind MethodGefarnateCohort StudiesColorectal NeoplasmsCod Liver OilThiazolesAntacidsNonprescription DrugsIsoenzymesFlufenamic AcidNitrobenzenesGastritisDiflunisalFamotidineSafety-Based Drug WithdrawalsIncidenceAnticarcinogenic AgentsOmeprazole2-PyridinylmethylsulfinylbenzimidazolesRisk AssessmentCarrageenanDose-Response Relationship, DrugIntestine, SmallPatient SafetyChemopreventionProton PumpsTreatment OutcomeDrug IncompatibilitySelf MedicationAdministration, TopicalRandomized Controlled Trials as TopicGastrointestinal AgentsProstaglandins