I saw a mini bottle with a single crystal (?) of capsaicin mounted inside it... the price scared me off!
Funnily enough I never have tummy or "afterburn" problems with chilli... I probably destroyed the nerve-ending years ago.
What gets me is the poison in the red kidney beans, even if I boil even "precooked" ones from cans for a good 10 minutes.
http://www.foodreference.com/html/ar...poisoning.html