Relenza
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Relenza:
Cough; diarrhea; dizziness; headache; nausea; sinus inflammation; sore throat; stuffy nose; vomiting.
Seek medical attention right away if any of these SEVERE side effects occur when using Relenza:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); abnormal behavior; confusion; hallucinations; irregular heartbeat; mood or mental changes; seizures; shortness of breath; symptoms of infection (eg, fever, chills, persistent sore throat); trouble swallowing; wheezing.