Oil of Oregano is the best remedy to prevent cold or flu from invading your body. It has a very strong flavour so I put a few drops in a couple of tablespoons of water and down it like a shot :) Very effective!!!

This wild oil of oregano is the best product I have tried. Its 100 % pure oregano oil. I use this at the first signs of a sore throat. Its very strong in taste it packs a terrible punch in your mouth. In order to help keep my throat feeling good you have to put about 6 little drops under the tongue and hold it for 30 seconds.
I also cook with it. a few drops in my spaghetti sauce makes it amazing