Something that ValL said on the recent burnt toast thread made me think of my mom and one thing that's always held true for me.
For an upset stomach, she used to pour coca cola syrup over ice, and after sipping it, I'd be fine. This can be found still in most drug stores, complete with a little coca cola sticker. It's just the straight syrup as far as I can tell.
Well some years after I didn't have that and tried a bit of regular coke over ice and added sugar. Worked fine.
Any others out there you'd swear by and/or know the science to?