My tried and tested (many many times) cure which works a treat is simple. You just need to get a good dose of all the vital food/drink groups.
Fat
Sugar
Carbs
and Cherry Coke!!
I'd recommend a couple of packs of the fattiest shop bought sandwiches you can find, cheese and coleslaw is good, sausage and cheese great, anything like that, avoid anything that has no mayo or cheese, the fat is vital!!
Follow those with a couple of packs of crisps, ideals are hula hoops, one pack of original and one pack of bbq flavour are a perfect dose!!!
Then for a good hit of sugar that will work as a pick you up until the fat starts to give you energy, something like a big cake, or a pack of mini rolls etc.
Wash all of this down with a bottle of cherry coke (full fat of course...none of this diet rubbish).
I can guarantee you'll be back on your feet and feeling pretty good in no time at all!!!