I’ve given up on milk chocolate, as several years ago it started ripping up my stomach (and often my throat) every time I ate it. Brand doesn’t matter - Swiss and Belgian are as bad as American in this respect.

Dark chocolate is more tolerable, although it can cause problems, too - and more unpredictably.

I had to give up brownies and chocolate chip cookies as well, and am wise not to eat chocolate cake or ice cream (but the latter two are also variable in their effects).

😕