On specially when you are in the restaurant you should prefer the soft drink called sprite. It helps to maintain you in the stress. Remember you should not drink it while eating it may cause you stomachache and acidity and that would be result in womiting. The soft drink sprite should be drink after the lunch/dinner in restaurant. The mint toffees like mentos should not eat before or after the soft drink. The bottle of sprite should be only of 750ml in restaurant and should consumed after eating is most recommended suggestion by myself