Nothing. You are completely safe if one gets swallowed.

Are you supposed to swallow mints?

Mint is a member of the Lamiaceae family, consisting of about 15 to 20 species, such as spearmint and peppermint, all of which are perfectly fine to eat raw or cooked.

How many mints can you eat in a day?

Sugary mints are not approved by the American Dental Association. In fact, they recommend you aim to consume no more than 50 grams of sugar every day, which is less than 3 pieces of peppermint candy.