IbuprofenTabletsTablets, Enteric-CoatedAnti-Inflammatory Agents, Non-SteroidalChemistry, PharmaceuticalExcipientsDrug CompoundingAnalgesics, Non-NarcoticDelayed-Action PreparationsTechnology, PharmaceuticalAcetaminophenPowdersTherapeutic EquivalencyMethylcelluloseSolubilityDiclofenacAdministration, OralCyclooxygenase InhibitorsNaproxenAntipyreticsHardnessDosage FormsBiological AvailabilityCapsulesDuctus Arteriosus, PatentDrug StabilityPovidoneDouble-Blind MethodKetoprofenLubricantsCross-Over StudiesCelluloseCarboxymethylcellulose SodiumDrug Combinations