Capsiacin describes 5 capsaicnoids which give chiles their heat: Capsiacin Dihydrocapsiacin Nordihydrocapsiacin Homocapsiacin Homodihydrocapsiacin There is also a synthetic capsiaicinoid called vanillylamide of n- nonanoic acid. The above from "The Chile Pepper Encyclopedia" by Dave DeWitt. Dave Anderson TLCC http://www.tough-love.com > I have been informed that the 'heat' in peppers comes from two ingredients, > and not just capsaicin. Has anyone any idea as to this second wonder-drug > (we are all addicted to cap, so let's call a spade, "a spade") is ? And > what does it do, given that cap warms your stomach (and lavatory bowl) ?