Does Mentos only effect diet soda?

Mentos candies react with diet soda (specifically, diet sodas containing aspartame) to cause a foaming reaction due to the presence of gum arabic and gelatin in the candy. These ingredients act as nucleation sites for the dissolved carbon dioxide gas in the soda, causing it to rapidly form bubbles and foam up.

However, it's worth noting that the reaction is not exclusive to diet soda, as regular soda sweetened with sugar has also been shown to produce a similar but less extreme reaction with Mentos due to the gum arabic and gelatin.