I'm taking Theralac. I like it because it has both bifido(colon) and lacto(intestine) strains. They are also symbiotic, human sourced, and special selected strains.
Actually the best results I got from Kefir(water). Drinking the solution cut down my bloating quite a bit. I grow mine in a solution of water and realy raw honey.
I'm going to be getting milk Kefir grains soon. did you know that milk Kefir grains contain some 40 symbiotic strains ( Water Kefir only 18 or so). Commercial Kefir is nutritious but is a rip off. They use only a few extracted strains and they are not symbiotic.