I have sucess with primadophilus reuteri made by natures way, they have powdered or pill form, I use the pill, much easier than the powdered version...it has guaranteed intestinal release, aids with high cholesterol, lactose intolerance issues (both of which I had) and for women, vaginal health (haven't had a yeast infection since and I used to be quite prone to them).
Only one/day is needed and it's affordable, in Canada I pay 29.00 for 90 caps which lasts me 90 days, reason why it's affordable...the only downside to them is they must be kept cold (bought in the fridge at the store and kept in the fridge at home) or they lose a bit of their potency.
I use it to aid my crohn's and my IBS.
My bum is broken....there's a big crack down the middle of it! LOL :)