Honey, Dash of salt and a pickle in a glass of warm water. The honey will burn off any alcohol left in your system, the salt will replace electrolytes in your stomach as will the pickle. Usually works for me, just depends on how hung over you are. Then drink bottles of Gatorade. If you must take some Tylenol, but only if you must. Try to stay away from pain meds, they mess with your liver when your hung over.
Personal Trial and Error, I used to work in a Beer and Wine Store.