Avoid using antacids within 15 minutes before or after taking a medication that contains Allegra. Antacids can make it harder for your body to absorb this medication.
Fruit juices and certain antacids can make it harder for your body to absorb fexofenadine. Do not take Allegra with fruit juice (such as apple, orange, or grapefruit).
Avoid taking any other cold or allergy medicines unless your doctor has told you to.
