Quote Originally Posted by Belac93 View Post
But your stomach acids would deal damage to the troll, thereby negating it's regeneration and killing it (most monsters deal acid damage when swallowing PCs).
(1) Stomach acid? What stomach acid? It's not in the stat block. There are a few monsters such as krakens and purple worms that have stomach acid, but I don't see any such thing listed for PCs.

(2) Something has to be pretty deadly before it can deal even one HP of damage. Bleach may be acidic from a chemical standpoint in real life, but in D&D terms it probably doesn't even do 1 HP of damage per round unless you get it in your eyes or swallow it.

(3) Try eating troll at my table and find out if your theory is correct. Or if you're more evil, try feeding troll to the kender and watch what happens.