Studies have shown that NSAIDS exert their therapeutic effect by the inhibition of cyclooxigenases (COX) 1 and 2, which determines the inhibition of prostaglandins production whose effects potentiate the action of many inflammatory mediators. The protocol for the administration of these formulations will involve the administration of a tablet of the immediate release product (100 mg) every 12 hours, and one capsule of the modified release product (200 mg ketoprofen with omeprazole) every 24 hours, during 4 days.