Pioglitazon dient met zorg te worden toegediend bij gelijktijdige toediening van P450 2C8-remmers (zoals gemfibrozil) of -inductors (zoals rifampicine). ###>Pioglitazone should be used with caution during concomitant administration of cytochrome P450 2C8 inhibitors (e. g. gemfibrozil) or inducers (e. g. rifampicin).