My doctor wants to put me on a SIBO treatment, and afterwards she wants me to go heavy for a while on Probiotics. What commercial probiotic product do you recommend? I was looking at Garden of Life, 100Billion. It looks to me basically like dried kefir. I might actually do kefir with raw milk and mix some fruit in there and RS too. I think there is a trillion cfus in a cup of kefir, and about 30 strains. But I am also thinking about a commercial product too. I was looking into ones that contain soil bacteria but I read they simply perform their task and pass straight through. They don't colonize.