There's probably nothing wrong with the candy here in particular; you are describing a common effect of sugar-free candy. They're notorious for acting as a laxative; the Amazon reviews for Haribo Sugar Free Gummy Bears are a particularly entertaining bathroom read.
Food Safety Report: WinCo Foods Everett, 19th Avenue Southeast, Everett, WA, USA
There's probably nothing wrong with the candy here in particular; you are describing a common effect of sugar-free candy. They're notorious for acting as a laxative; the Amazon reviews for Haribo Sugar Free Gummy Bears are a particularly entertaining bathroom read.