Increased risk of bleeding w/ medicinal products associated w/ bleeding risk, oral anticoagulants, ASA, heparin, SSRIs. Increased occult GI blood loss w/ NSAIDs eg, naproxen. Reduced drug levels w/ strong or moderate CYP2C19 inhibitors eg, omeprazole, esomeprazole, fluvoxamine, fluoxetine, moclobemide, voriconazole, fluconazole, ticlopidine, carbamazepine, efavirenz. Decreased exposure w/ PPIs eg, omeprazole, esomeprazole. Increased plasma conc w/ CYP2C8 substrates eg, repaglinide, paclitaxel. Glycoprotein IIb/IIIa inhibitors, thrombolytics, NSAIDs eg, COX-2 inhibitors.