ive been doing some research on them and it seems a few strains are better for the lower intestines and survive longer than others. one mentioned was lactobacillus gg. has anyone taken that specific strain and found it better than lactobacillus acidophillus for bowel problems? i think the tablet is marketed under 'culturelle' or something in the US. its not sold here but there is a brand of yoghurt that has LGG in it, as well as 2 other strains i cant remember.