The best thing to do is rehydrate yourself... alcohol dehydrates you something aweful, so they best thing to do is to constantly drink fluids.. if you are puking a whole lot.. keep drinkin water so you have something to throw up and you arn't puking up stomach acid which is quite dangerous. I am also a big fan of eating some eggs and toast.. it helps.. also just sleep... as much as possible, in a dark room.
