Just wait it out. Take some drugs if it becomes unbearable. One of the upsides about being a heavy drinker is that throwing up comes naturally and feels a lot better since you aren't drunk. Also, drink Sprite or have some popsicles. That way when you puke you don't have to deal with an awful taste. If anything, it kind of feels good to have colder stuff come back up because the cooler temperature makes the throat feel good since it is usually sore or fatigued if you have anything that makes you throw up.