A study in healthy subjects indicated that pharmacokineticsof pioglitazone 45mg daily are not significantly affected by fexofenadine 60mg twice daily, and that pioglitazone does not affectthe pharmacokinetics of fexofenadine.(See reference number 1)
1. Robert M. Pharmacokinetics of coadministration of pioglitazone with fexofenadine. Diabetes (2001) 50 (Suppl 2),A443.