My Grandparents who were not drinkers turned me on to this when I was old enough (12) to handle it

Hot buttered rum. Take two shots of rum, add a pat of real butter and sprinkle some nutmeg in a large coffee mug, pour boiling water in and keep stirring it as you drink coz the nutmeg always goes to the bottom. It doesn't taste good, but it's not that bad either. Warms you up from the inside out and makes you very sleepy.
This will not work if you're puking, but if you feel some nastiness coming on, or it's already hit you. Drink one of these, go to bed with extra blankets, and you'll sleep like a baby and feel much better in the morning.