Yes I believe Miracle-Mineral-Supplement does alter your good bacteria in your bowel even though it is claimed it doesnt. I have seen the effects in my bowel movements and just general feelings in the bowel that the balance was gone. I cannot recommend highly enough a very powerful probiotic called VSL #3 many more thousands time powerful than any yoghurt or capsule you could take. Do a net search for it and get it wherever you can, well worth it.