I used home-made yogurt/ sauerkraut/ expensive probiotic pills from refridgerated section in Health Food Store ( L. reuteri etc strains), Some probiotic (VSL 3) given to me by a GI specialist which had 450 billion strains of bacteria.
I was a strong beleiver in them, and knew all the names by heart. But they did nothing to cure my IBS/bloating.
I read messages from Andreas that probiotics don't do much. Barefoot Herbalist has similar opinion.
My experience, they are a scam :)
I have cleansed my intestines using Castor Oil. Has helped me immensely.... My digestion is improving and I care least abt pro-biotics.