Optibac probiotics bifidobacteria and fibre is a natural supplement containing selected microorganisms and fibres to help those with constipation it can be taken once in a day for maintaining healthy bowel movements active powerful ingredients bifidobacterium lactis bb 12 a high quality strain to survive stomach acidity and biliary salts to reach the gut alive fructooligosaccharide fos a soluble fibre provides natural high fibre for easy digestion it acts as a food source for the body