Drug interactions with Erythromycin and Ketoconazole: Co-administration of fexofenadine hydrochloride with Ketoconazole and Erythromycin led to increased plasma levels of fexofenadine hydrochloride.
Drug interactions with Antacids: Fexotine should not be taken closely in time with aluminium and magnesium containing antacids. Aluminium and magnesium containing antacid decreased fexofenadine hydrochloride AUC and Cmax.