What side effects may I notice from receiving Relenza?

Side effects that you should report to your doctor or health care professional as soon as possible:

-abnormal behavior
-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-breathing problems
-confusion
-fast, irregular heart beat
-feeling faint or lightheaded, falls
-fever
-hallucinations
-other ear, nose, or throat infection
-seizures
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-cough
-diarrhea
-headache
-nasal congestion
-nausea

This list may not describe all possible side effects for Relenza. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.