caxime; diclofenac; diclofenac plus ranitidine; ranitidine; unclassified drug; adult; area under the curve; clinical trial; conference paper; controlled clinical trial; controlled study; crossover procedure; drug bioavailability; drug blood level; drug formulation; drug half life; drug mixture; enteric coated tablet; human; male; normal human; randomized controlled trial; Adult; Anti-Inflammatory Agents, Non-Steroidal; Anti-Ulcer Agents; Area Under Curve; Biological Availability; Chromatography, High Pressure Liquid; Cross-Over Studies; Diclofenac; Drug Combinations; Half-Life; Human; Male; Ranitidine