When can Tamiflu (oseltamivir) be useful to treat or prevent flu?
Tamiflu can be used to treat the symptoms of flu in people who are showing the typical symptoms of flu and the flu virus is known to be going around in the local community. Tamiflu works if it is taken within 2 days of the start of any symptoms. It reduces the severity of symptoms and shortens the length of time you feel unwell. Tamiflu can also be used to prevent someone from becoming infected with flu if they have been in contact with someone who has flu, and flu is known to be going around in the local community.
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