What side effects may I notice from receiving Allegra-D 24 Hour Allergy & Congestion?

Side effects that you should report to your care team as soon as possible:
-Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
-Heart palpitations—rapid, pounding, or irregular heartbeat
-Increase in blood pressure
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
-Anxiety, nervousness
-Dizziness
-Drowsiness
-Dry mouth
-Fatigue
-Headache
-Trouble sleeping

This list may not describe all possible side effects for Allegra-D 24 Hour Allergy & Congestion. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.