Tamarind is a fruit that is popular in the foods of Southeast Asia, North Africa and India.
I have discovered a simple tea that brings tremendous relief to gallstone pain and is an all-around healthy drink to boot. Flaxseed Tea. All you have to do is get your hands on a bag of golden flax seeds from the healthfood store. I found adding a stick of cinnamon while it steeps adds a nice flavor.
Inflammation is my other theory. Most people in America have a diet with an improper ratio of Omega 3 to Omega 6 fatty acids. If the bloating isn't gas, perhaps it is paralysis or distention caused by an inflamed stomach lining. This might be why flax seeds work so well for a lot of IBS patients.