Heartburn Relief? in Sclero Forums (MAIN) Posted November 7, 2006 · Report reply Theobromine is an alkaloid found in chocolate. According to Wikepedia, the name comes from the genus of the cacao tree, theobroma, which means food of the gods. It is one of the reasons for chocolates mood elevating effects. It's also the reason chocolate is lethal to cockatiels - they can't metabolize it.