Lemon
Lemon has been used for centuries in both Eastern and Western medicine. In addition to having a fresh, pleasant flavor, it has many healing properties.
The acidity of lemon juice helps to soothe an upset stomach and settle the contents of the stomach back into place. This can reduce the desire to vomit, which can be very useful in a situation where you feel nauseous but not close enough to a bathroom and don’t want to vomit in front of others.
Taken internally, lemon can help relieve nausea and vomiting. The gastrointestinal tract easily absorbs it, so the effects are felt quickly. If you don’t have access to any other remedies or want to experiment with something natural before reaching for more conventional medication, try squeezing some lemon juice into your mouth.