When I was dating my first g/f, her mom would make me a "hot tottie" when I had a cold. I know it had honey and some kind of alcohol, which being underage and never drinking before really knocked me for a loop. There were other "secret" ingredients in it too. It always worked like a charm and the next day I was good as new.
So, now not knowing what was in it, I just make a hot drink with some kind of nighttime cold medicine, throw on a T-Shirt and all kinds of blankets on the bed and sweat it out. One night of that and I'm better than ever.