
Co-administration of Pioglitazone with gemfibrozil (an inhibitor of cytochrome P450 2C8) is reported to result in a 3-fold increase in AUC of Pioglitazone. Since there is a potential for an increase in dose-related adverse events, a decrease in the dose of Pioglitazone may be needed when gemfibrozil is concomitantly administered. Close monitoring of glycemic control should be considered.
Co-administration of Pioglitazone with rifampicin (an inducer of cytochrome P450 2C8) is reported to result in a 54% decrease in AUC of Pioglitazone. The Pioglitazone dose may need to be increased when rifampicin is concomitantly administered. Close monitoring of glycemic control should be considered.