Releza FAQ

What is Relenza used for?
Relenza is a medication used to treat the flu virus in people 7 years and older who have been showing flu symptoms for the last two days.

Special Warnings with Relenza:

  •  Some patients have serious breathing problems or bronco spasm when they used Relenza,  however not all of these people had previous asthma or chronic obstructive pulmonary disease.  Relenza has not been shown to shorten the duration of influenza in people with these diseases.  Because of the risk of side effects and because it has not been shown to help them, Relenza is  not generally recommended for people with chronic respiratory disease such as asthma or  chronic obstructive pulmonary disease.
  •  If you have lung disease you should have a fast-acting inhaled bronchodilator available while  being treated with Relenza. If your breathing worsens, stop using Relenza and call your health  care provider.

Precautions some people may have with Relenza
  •  Stop taking Relenza and contact your health care provider if you experience signs or symptoms  of an allergic reaction such as shortness of breath, swelling of eyelids, face, or lips or a skin  rash.


  •  Other kinds of infections can appear like influenza or occur along with influenza, and need  different types of treatment. Contact your health care provider if you feel worse or develop new  symptoms during or after treatment, or if your influenza symptoms do not start to get better.


  •  Taking Relenza should not affect your decision to have an annual influenza vaccination.


  •  The safety and efficacy of repeated courses of treatment have not been established.


  •  If you use a bronchodilator and are scheduled to use it at the same time as Relenza, use your  bronchodilator first before using Relenza.
As with any medication side effects can happen when you use Relenza. This is not a complete list so ask your doctor about anything you may be concerned about.

Side effects may include:
  •  cough

  •  diarrhea

  •  nausea

  •  vomiting

  •  nasal irritation

  •  bronchitis

  •  headache

  •  sinus inflammation

  •  ear, nose and throat infections

  •  dizziness

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