RULE NUMBER ONE - NEVER, EVER drink cheap whiskey. Drink only the top of the line stuff or don't drink at all.
Everyone is right - drink LOTS of water while you're drinking alcohol.
You don't HAVE to drink too much. You might try to moderate it a little bit. What fun is there in being so wasted that you don't remember the good time you had the night before. Or worse, to receive those phone calls the next day that start out, "Do you remember what you did last night?"
DO NOT TAKE ANYTHING WITH ACETOMINEPHIN IN IT! LIVER DAMAGE.
Get yourself some large capsules of activated charcoal and take a couple in the morning.
If you can get your doctor to give you a prescription for it, get a small tank of pure oxygen. Breathe that in the morning when you get up.
If you can face it, fry up some bacon and make a nice greasy gravy and eat it over a biscuit.
Failing that, strain the liquid out of a can of Campbell's chicken and rice soup and eat onliy the broth.
Continue drinking lots of water the next day.
The old thing about a bloody mary is total BS, as is the whole "hair of the dog" thingy. Do not drink any more alcohol.
Don't waste your time promising yourself that last night was the LAST TIME YOU WOULD EVER DO SUCH A THING. You're going to keep on doing it as long as you are a drinker.
Salud!
Francois