Tamiflu will work to prevent the flu if you take the Tamiflu 48 hours before the onset of the flu.
If you take the Tamiflu after you get the flu symptoms then the flu symptoms will still linger and you'll still suffer from the flu.
Tamiflu works to get rid of the flu virus before it has time to fully infect you but once you're fully infected with the flu then nothing will work except rest, staying hydrated and then within a week to 14 days the flu should be gone.
You must take Tamiflu 48 hours before the onset of the flu for it to be effective.
Tamiflu is a prescription only flu medicine and does work but it's also costly and sometimes you'll need to pay out of pocket for it.
If you start feeling the symptoms of the flu then see a doctor and get prescribed the Tamiflu and then take the Tamiflu and you should feel better within a few days.
But continue taking the Tamiflu for up to 6 weeks or until the flu has gone away.