POLO Sugar Free mints help to protect the mouth against dental erosion. The sorbitol in POLO sugar free mints stimulates the production of saliva, which is the mouths natural defence against acid. This helps to protect your teeth against dental erosion caused by acidic foods and drinks.It is dangerous to consume too many mints of any kind, and it can lead to stomach problems, diarrhea, and in some cases, seizures/death. Anything in excess can cause problems, even water. “If consumed to excess it can cause diarrhea and gastrointestinal disturbances.