Glimepiride: Salicylates, sulfonamides, chloramphenicol, clarithromycin, coumarin anticoagulants, probenecid, CYP2C9 inhibitors, fibric acid derivatives, disopyramide, fluoxetine, quinolones, ACE inhibitors, MAOIs and ?-blockers may potentiate the hypoglycaemic action of glimepiride. Thiazides and other diuretics, corticosteroids, phenothiazines, thyroid products, oestrogens, phenytoin, nicotinic acid, sympathomimetics and CYP2C9 inducers may reduce hypoglycaemic effect of glimepiride. Reduced plasma concentration w/ colesevelam.
Rosiglitazone: Increased plasma conc w/ gemfibrozil. Decreased plasma conc w/ rifampicin.