I know this thread is old but just in case you're still looking and for others who may be interested.

I've tried quite a few brands and I only tolerated Culturelle, the one in veggie caps. I perfectly tolerated it  every time and I've taken bottles of it several times over the years and tolerated it fine at the same time I'm not tolerating virtually anything else I ingest. I'm always surprised when I tolerate anything these days.

Luckily it's one of the most studied probiotic strains and so has some decent evidence that it's helpful and it survives passage through the stomach acid and colonizes the gut. Though it doesn't colonize the gut longterm so you have to keep taking it to keep all of it's benefits. Of course some benefits are longterm such as when a probiotic help resolve some dysbiosis such as a Candida overgrowth.


Candida and Rhamnosus GG (Culturelle)

http://www.ncbi.nlm.nih.gov/pubmed/18185091