Relenza (Zanamivir) is a drug used to treat infections caused by two of the most common flu viruses. Zanamivir may decrease the length of time you experience symptoms of the flu by 1-2 days. Zanamivir may also help to reduce the risk of spreading the flu to others.
If you are also using a bronchodilator inhaler (such as albuterol) use that inhaler first. Wait a few minutes before using zanamivir.
Zanamivir inhalation powder is for regular inhalation through the mouth. Follow the directions on the prescription label. The usual regimen is 2 inhalations twice daily, morning and night, at regular intervals for 5 days.