AspirinAnti-Inflammatory Agents, Non-SteroidalPlatelet Aggregation InhibitorsMedication AdherenceMedication ErrorsProtein PrecursorsCyclooxygenase InhibitorsCyclooxygenase 2 InhibitorsIbuprofenNaproxenThromboxane B2TiclopidineDiclofenacSalicylatesProstaglandin-Endoperoxide SynthasesDrug Therapy, CombinationMedication ReconciliationMedication SystemsPlatelet AggregationCyclooxygenase 1AcetaminophenMedication Systems, HospitalCyclooxygenase 2Gastrointestinal DiseasesPlatelet Function TestsGastrointestinal HemorrhageRisk FactorsIndomethacinAmyloid beta-Protein PrecursorTreatment OutcomeDose-Response Relationship, DrugDrug PrescriptionsBlood PlateletsDouble-Blind MethodSodium SalicylateTime FactorsSulfonamidesStomach UlcerPyrazolesProspective StudiesDrug UtilizationSelf MedicationDrug InteractionsAsthma, Aspirin-InducedKetoprofenFibrinolytic AgentsAnticoagulantsAnalgesics, Non-NarcoticEtodolacSulfonesWarfarinPatient ComplianceTablets, Enteric-CoatedLactonesPiroxicamGastric MucosaSulindacHemorrhageEnzyme PrecursorsMolecular Sequence DataPeptic UlcerUnited StatesNonprescription DrugsFollow-Up StudiesPrescription DrugsCohort StudiesDinoprostoneDrug TherapyDrug HypersensitivityDrug CostsProstaglandinsPeptic Ulcer HemorrhageRNA PrecursorsPolypharmacyThiazinesPlatelet ActivationRetrospective StudiesBleeding TimeRisk AssessmentThromboxanesRandomized Controlled Trials as TopicThrombosisDrug Administration ScheduleNitrobenzenesAnalgesicsPsychotropic DrugsMembrane ProteinsAmino Acid SequenceThromboxane A2Myocardial InfarctionCardiovascular DiseasesIsoenzymesCase-Control StudiesDrug-Related Side Effects and Adverse ReactionsAntihypertensive AgentsAdministration, OralDrug ResistanceDipyridamoleStrokeChemoprevention