The first time my father allowed me to drink alcohol was when I got a cold. In a rough voice he said; "I'm gonna make you something that'll make help you!" (According to the instructions you should take this brew as soon as you feel a cold coming on, in the middle of a cold it's not gonna do you any good.)
1. Make tea 2. Pour 3 cl of whiskey into the tea (preferably not Irish) 3. Squeeze half a lemon into it 4. Ad sugar cause a hand-full of sugar makes the medicine go down.
Since I didn't drink this a couple of days ago I'm now dreadfully cold.
Otherwise I'm a wait-it-out girl who practise the never-use-Ipren or Alvedon. Why would you want to limit the body's own defence against the cold? Trust me it'll only prolong your suffering.
I have one more principle: Never drink while having a cold. Alcohol per definition is a poison and when you have alcohol you body wants to fight it, with the result that you'll get even worse. Although while drunk you might not feel it as much. The trick therefor is to remember this rule before having your first beer... And that's my final advice to you today.