Meh... water, sleep, Dr Pepper or Coca Cola (the real stuff, not defcaf, sugar free or any of that crap) and maybe one or two caffeine pills when you wake up, if it's particularly bad, take 1 indigestion tablet every few hours and painkillers when required. Food at the earliest possible moment without throwing up and make it something hot.
You could probably suppliment the soft drink with tea/coffee if you don't eat anything hot.
To be honest I tend to skip everything after the caffeine pills (except the food, gotta have food) usually since getting on with the day and not feeling sorry for yourself works wonders...