How should I use zanamivir?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
Start taking zanamivir as soon as possible after flu symptoms appear, such as fever, chills, muscle aches, sore throat, and runny or stuffy nose.
Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you do not understand these instructions.
Zanamivir is packaged in disk-shaped foil packs that contain 4 blisters of medicine. These disks are placed into a device called a DISKHALER that you will use to inhale the medicine. The device opens and loads a blister of zanamivir each time you use the inhaler.
To treat flu symptoms: Use 2 inhalations twice per day for 5 days. On the first day of treatment, space your doses at least 2 hours apart. On the following days, space your doses at least 12 hours apart.
To prevent flu symptoms: Use 2 inhalations every 24 hours for 10 to 28 days. Follow your doctor's instructions.
Do not use a nebulizer or ventilator to give zanamivir. Zanamivir inhalation powder should never be mixed with a liquid.
If you are scheduled to use a bronchodilator at the same time as zanamivir, use the bronchodilator first.
Use this medicine for the full prescribed length of time, even if your symptoms quickly improve. Call your doctor if your symptoms do not improve, or if they get worse.
Store at room temperature away from moisture and heat. Throw away the DISKHALER after your treatment ends.