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How Tamiflu Works: For the virus to penetrate human cells and then spread the infection to other cells throughout the body, it relies on an enzyme called neuraminidase (NA) that has a mushroom-like shape. The virus utilizes this enzyme to bust out of the host cell and spread lots more viruses (and chaos) throughout the body.
Tamiflu (oseltamivir) is an antiviral medication that blocks the actions of influenza virus types A and B in your body. Tamiflu is used to treat influenza in people 2 weeks of age and older who have had flu symptoms for 2 days or less. Oseltamivir may also be given to prevent influenza in people who are at least 1 year old, who may be exposed but do not yet have symptoms. Tamiflu will not treat the common cold.