Increased risk of bleeding w/ medicinal products associated w/ bleeding risk, oral anticoagulant, ASA, heparin, SSRIs. Increased occult GI blood loss w/ NSAIDs eg, naproxen, COX-2 inhibitors. Increased drug levels by strong CYP2C19 inducers eg, rifampicin. Reduced drug levels by strong or moderate CYP2C19 inhibitors eg, omeprazole, esomeprazole, fluvoxamine, fluoxetine, moclobemide, voriconazole, fluconazole, ticlopidine, carbamazepine, efavirenz. Reduced metabolic exposure w/ pantoprazole or lansoprazole. Increased repaglinide, paclitaxel plasma conc. Glycoprotein IIb/IIIa inhibitors & thrombolytics.