Eat hella garlic. I mean LOTS. Your breath is going to smell like shit anyways, with your draining sinuses, and garlic tastes better than that rotten taste you get with a stuffed up nose. And not just like a few slices off a clove -- eat 2-3 whole cloves, several times a day. If you alternate bites with slices of buttered bread it shouldn't burn your mouth or stomach. That shit is as good an antibiotic as you need, unless you get really really sick, then go see a doctor for perscription antibiotics. A -few- shots of hard liquor doesn't hurt either, because it will raise your temperature a little bit, like a fever. Dont get drunk though, because it'll weaken your immune system.
Learned this living in Eastern Europe. They are healthy as shit over there, even though it is often cold and miserable and people dont have much scrilla. It works. Ivan to Sketchy B: "Vhat is this ibuprofeen sheet? No Ibuprofeen -- Eet more garlic!!!"