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Tamiflu used as a prophylactic (preventive) measure for the flu is usually prescribed for ten days following the last known or suspected exposure to the virus. If it is being used to treat an already infected person to lesson the severity of symptoms and shorten the duration of the flu symptoms, it is usually prescribed for a period of five days.

It does not provide long term protection from the flu. Only an immunization (vaccine) can do that.

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14y ago
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6y ago

Tamiflu only works if you start taking it within 2-3 days of the very beginning of your symptoms. This is why it is important to go to the doctor quickly as soon as you have flu-like symptoms.

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