Can Coffee Irritate Gums. One of the primary culprits of an upset stomach after drinking coffee is acidity. But excessive coffee consumption can dry out the mouth which can irritate the gums.
Acid erodes tooth enamel and can lead to decay and. This danger is lessened if you clean your teeth shortly after consuming it. Eating blueberries, strawberries, blackberries or even chocolate can trigger a mouth ulcer in some people.
