They [Tamiflu] do have some nasty side effects and are nowhere near as effective as they are made out to be.
Check out elderberry extract or tincture or make your own at home from dried elderberries and vodka, Safer and lot more more effective.
It can often just abort the Flu in 2 or 3 days.
Edit: Gus the Fuss and jennyr are suggesting now would be a good time to book a holiday to Mexico, as Swine 'Flu doesn't exist, and you can probably get cheap tickets right now. Oh please, pleeeeease… I'm tempted to offer to pay for their tickets, provided they take John "Cock" Stone with them.