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Ketoconazole and erythromycin increased the plasma concentration of Fexofenadine.
Antacids containing aluminum and magnesium decreased the plasma concentration of Fexofenadine.
Fruit juices (grapefruit, orange, apple) may reduce bioavailability of Fexofenadine.
Laboratory test interferences: Fexofenadine should be discontinued at least 24-48 hours before skin testing procedure because Fexofenadine may interfere or decrease positive result of skin reaction indicator.
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