I ate more than a couple servings of sugar free candy yesterday that contained isomalt. It is the first ingredient listed so the candy must contain quite a bit of it. I had to learn the hard way and did not heed the warning about how excessive consumption could lead to a laxative effect. I was in agony for hours. My digestion system is very sensitive and the isomalt did cause a laxative effect. I thought I would die! It will be a long time before I eat more than a couple pieces of it at one time. Ouch!