While the normal human digestive tract contains hundreds of probiotic bacteria that contribute to a healthy immune system, the body can often benefit from a 'top-up' of healthy bacteria to guard against harmful microorganisms.
i have used these to help with my ibs which they do ! thank goodness , i did try some others and and they didnt do the trick at all ,so wasted my money there !! these do a great job of keeping my gut happy !!