|  | | Interactions: |  | Antacids Comb. Adverse Effect: decreased fexofenadine efficacy     
 Clinical Management: Fexofenadine should not be administered in close proximity to antacid ingestion.Erythromycin Adverse Effect: Increased fexofenadine serum concentrations     
 Clinical Management: No changes in dosing or patient monitoring appear to be necessary during concomitant therapy.Ketoconazole Adverse Effect: Increased fexofenadine serum concentrations     
 Clinical Management: No changes in dosing or patient monitoring appear to be necessary during concomitant therapy. | 
 |  |