 While "Lactobacillus rhamnosus" GG (ATCC 53103) is able to survive the acid and bile of the stomach and intestine, is claimed to colonize the digestive tract, and to balance intestinal microflora, evidence suggests that "Lactobacillus rhamnosus" is likely a transient inhabitant, and not autochthonous.Regardless, it is considered a probiotic useful for the treatment of various maladies, as it works on many levels.