I thought I had got this under control when I gave up fructose, but it is happening again. I drink chilled water, or sometimes I eat someting sugary (I mean a single sugar lump when desperate for energy, for example) and within about ten minutes my tummy has bloated up until I look about seven months pregnant. I am not exaggerating. It is horribly painful. There is a lot of gas which I can feel and hear gurgling and which takes about 24 hours to eventually work its way through, but there is also intense pain independent of the gas. I've tried taking antihistamines because I know I have a lot of allergies and because coldness can trigger a histamine release, but there was little effect. I have tried taking a large dose of charcoal and this definitely limited the gas and bloating to less than usual, but did nothing for the awful pain. Has anyone else had this and does anyone have any idea what is going on? Wild guesses will also be received with interest! I am so desperate about this I'll try anything.