re: why it doesn't work Not good against normal flu not sure yet...

re: why it doesn't work Not good against normal flu not sure yet about bird flu still looking. Ssome say potata some say potato!

Relenza (zanamivir)

FDA has approved Relenza (zanamivir), an anti-viral drug, for persons aged 7 years and older for the treatment of uncomplicated influenza virus. This product is approved to treat type A and B influenza, the two types most responsible for flu epidemics. Clinical studies showed that for the drug to be effective, patients needed to start treatment within two days of the onset of symptoms. The drug seemed to be less effective in patients whose symptoms weren't severe or didn't include a fever.

Relenza is a powder that is inhaled twice a day for five days from a breath-activated plastic device called a Diskhaler. Patients should get instruction from a health-care practitioner in the proper use of the Diskhaler, including a demonstration when possible. Relenza has not been shown to be effective, and may carry risk, in patients with severe asthma or a lung condition called chronic obstructive pulmonary disease. Some patients with mild or moderate asthma experienced bronchospasm (marked by shortness of breath) after using Relenza.

Some patients have had bronchospasm (wheezing) or serious breathing problems when they used Relenza. Many but not all of these patients 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. Anyone who develops bronchospasm worsening respiratory symptoms such as wheezing and shortness of breath should stop taking the drug and call their health-care provider. Patients with underlying respiratory disease should have a fast-acting inhaled bronchodilator available when taking Relenza.

Relenza is not approved for use in prevention of influenza (prophylaxis) and is not a substitute for influenza vaccine.