On One Hand: Recognized Benefits

Most cases of influenza A are treated with ibuprofen or acetaminophen. However, some cases of type A influenza may be treated with medications such as oseltamivir (Tamiflu) and zanamivir (Relenza). These drugs may shorten the illness by a day if they're taken as soon as the symptoms appear. Tamiflu is taken orally and Relenza is taken through an inhaler.

On the Other: Side Effects

Tamiflu and Relenza both have adverse effects that include loss of appetite, breathing difficulty, dizziness, nausea and vomiting. They shouldn't be taken by patients with asthma, lung disease or other respiratory problems. The Food and Drug Administration (FDA) requires a warning label for Tamiflu indicating that it may increase the risk of self-injury.

Bottom Line

Type A influenza is typically treated with bed rest, fluids and other supportive measures rather than antiviral medication. The benefit of these medications is usually limited to a slight reduction in the duration of the illness. The use of antiviral medications can also result in the development of resistant strains of the virus. Type A influenza should not be treated with aspirin due to the potential for Reyes' syndrome.

Source:

Mayo Clinic