Man, I feel like I should be the king of this thread…IBS, gastritis, and just an overall weak stomach my whole damn life. (Incidentally, in addition to actually learning my lesson about binge drinking the FIRST time, Prilosec OTC and amitriptyline have been life savers.)
When I’m upchucking, particularly after it’s been going on a while, I find that I crave 3 things: Gatorade, Coca-Cola, and 7-Up. Gatorade for the electrolytes, and because the flavor, as mentioned above, is mild enough to not make your tummy reject it outright. Coke and 7-Up are tougher to explain; those may be more comfortable than anything else, since it’s an age-old home remedy, BUT I think it all boils down to sugar. I once realized that Emetrol, the OTC nausea medicine, is really just a thick sugar solution. And for me at least, Emetrol works.
Sadly, the night after my wedding, staying in the Presidential Suite of a beautiful Bed and Breakfast, my belly decided to go all stabby on me. Usually I pack lots of stomach medicine, just in case, often including phenergan (sp?) but because of the wedding I had nothing.
On one of many trips to the bathroom, I noticed the in-room coffee pot, which had, beside it, condiments for said coffee. I nabbed 3 sugar packets and as soon as I was still enough to not be completely nauseated, I downed them. It worked. The nausea went away for a while–long enough for the new wife to return with a stockpile of Coke, etc.
Popsicles are amazing, too. Keeps fluids going in, feels good on your usually parched mouth and throat, and limits you from chugging too much at one time.