Optibac Probiotics formulated specifically to target abdominal bloating by the experts in probiotics. Can be used as a preventative or treatment. 7 day course once every 4 weeks. Neutral taste. Easy to mix. Recommended for monthly use. 5 billion Probiotic & Prebiotic. This is a blend of probiotics (such as acidophilus) & prebiotic fibres (food for the probiotics) especially for those who suffer from bloating. This natural supplement supports your digestion & aids transit, promoting a comfortably flatter stomach.