AspirinTabletsTablets, Enteric-CoatedPainPlatelet Aggregation InhibitorsAnti-Inflammatory Agents, Non-SteroidalChronic PainPain ManagementChemistry, PharmaceuticalPain ThresholdPain, PostoperativeExcipientsLow Back PainBack PainDelayed-Action PreparationsPain MeasurementTiclopidineDrug CompoundingThromboxane B2Abdominal PainNeck PainCyclooxygenase InhibitorsPain, IntractablePlatelet AggregationSalicylatesTechnology, PharmaceuticalPelvic PainPain PerceptionPlatelet Function TestsMethylcelluloseFacial PainDrug Therapy, CombinationAcute PainDouble-Blind MethodPain, ReferredPowdersAdministration, OralAcetaminophenSolubilityBlood PlateletsTreatment OutcomeSodium SalicylateIbuprofenShoulder PainFibrinolytic AgentsAnalgesicsHardnessMusculoskeletal PainDose-Response Relationship, DrugHemorrhageAsthma, Aspirin-InducedTime FactorsAnticoagulantsProspective StudiesWarfarinCyclooxygenase 1CapsulesGastrointestinal HemorrhageCross-Over StudiesProstaglandin-Endoperoxide SynthasesBleeding TimeTherapeutic EquivalencyPlatelet ActivationThromboxanesLubricantsCyclooxygenase 2 InhibitorsRisk FactorsThromboxane A2Dosage FormsThrombosisAnalgesics, Non-NarcoticDipyridamoleDrug CombinationsFollow-Up StudiesDrug Administration ScheduleCelluloseBiological AvailabilityPovidoneEtodolacIndomethacinLipoxinsMyocardial InfarctionNociceptive PainDrug ResistanceDrug StabilityAdministration, BuccalNeuralgiaGastric MucosaChronic DiseaseAnalgesics, OpioidHardness TestsStomach UlcerCyclooxygenase 2NaproxenSulfinpyrazoneDiclofenacStrokeDrug InteractionsReye SyndromeProstaglandins