This supplement from optibac probiotics formerly known as for maintaining regularity contains 5 billion live cultures of a unique strain called bifidobacterium lactis bb 12174 with fructooligosaccharide fos fibres those who have an imbalance in good and bad bacteria in the gut may be more susceptible to digestive health conditions such as constipation or sluggish bowels bifidobacterium lactis bb 12174 is thought to be the worlds most researched strain of the entire bifidobac