Ginger This root is very effective in soothing a nervous or upset stomach, and the speed at which it works can often be surprising.
In general, the spiciest, 'hottest' ginger is the best for this kind of relief, so the stronger the better.
There are many different ways to consume ginger, including raw straight from the root (although this is rather unpleasant), in ginger ale (the fact that it's carbonated can also help), in food (ginger biscuits and crystallised ginger) and in ginger tea, which brings me nicely onto the next remedy...
Hot and Cold When you've eaten too much, or your food isn't digesting properly you can feel nauseous.
One way to get your stomach working to digest the food is to trick it into thinking you're still eating a meal and you can do this with drinking small amounts of very hot or cold drinks.
Ice lollies, or even just ice cubes are great for this, as they just provide water and don't fill you up much more.
They also provide liquid which will make you feel better if you're dehydrated.
If you're using hot drinks in this way then it's best not to have ones that include milk as they're filling, but you can use stomach-soothing plants that are made into tea like ginger, nettle and peppermint instead.
Crackers Crackers, along with plain boiled rice and over-done, dry toast are all great for nausea caused by a stomach bug or eating something that's gone mouldy.
This is because they're very plain so won't upset you any more, but they also soak up whatever toxin is causing the problem in the first place.
Of course you'll only want to eat a little of these at a time, or you might cause bloating.