I too have trouble with anything over one small piece of any sugar alcohol-containing product. I can eat one square of the Darrell Lea Zero Carb choco bar witout consequences but, after, that I am in agony for hours. It has lactitol in it. It also stalled me and I am just getting over that problem. I am going to reserve one square for the very odd occasion so I don't feel totally deprived but I was having my one square twice a day and it definitely caused me a 2 week stall.