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In this Article

• What is Relenza and what is it approved for?
• Is Relenza a substitute for the flu vaccine?
• What do the terms treatment of the flu and prevention (prophylaxis) of the flu mean?
• Do I take Relenza the same way for treatment and prevention (prophylaxis) of the flu?
• What should I do if I continue to have or start to develop flu symptoms while taking Relenza?
• How is Relenza supplied?
• How many blisters are used for a dose?
• Are there instructions for people who have never used an inhaler?
• Are there any other special instructions to remember?
• Are there people who should not take Relenza?
• Should women who are pregnant or nursing take Relenza?
• What are the most common side effects of Relenza?
• What are the serious side effects of Relenza?
• Where can I get more information about Relenza and 2009 H1N1?

What are the serious side effects of Relenza?

Some people have more trouble breathing while using Relenza, especially if you have chronic lung disease. If you have more trouble breathing after using Relenza, you should stop using Relenza and get medical help right away.

Children and teenagers with the flu may be at a higher risk for seizures, confusion, or abnormal behavior early during their illness. These serious side effects may happen shortly after beginning Relenza or may happen in people when the flu is not treated. These serious side effects are uncommon but may result in accidental injury to the patient. People who take Relenza should be watched for signs of unusual behavior and a healthcare provider should be contacted right away if a patient shows any unusual behavior while taking Relenza.

Rare cases of allergic reactions, including serious skin rashes, have happened in people who use Relenza. If a rash develops, stop Relenza and contact a healthcare provider right away. Report any side effects and medication errors from Relenza to FDA at 1-800-FDA-1088.

Where can I get more information about Relenza and 2009 H1N1?

The following links provide additional information on Relenza:

• http://www.fda.gov/NewsEvents/PublicHealthFocus/ucm150305.htm
• http://www.flu.gov
• http://www.cdc.gov/h1n1flu/

SOURCES:

U.S. Food and Drug Administration

SOURCES:

U.S. Food and Drug Administration