When selecting probiotics, it is a good idea to pay attention to the number of bacteria from each strain, rather than the number of different strains. What also matters is whether a given strain or blend has been tested for effectiveness. In our ProbioticMe Advanced dietary supplement, we selected a blend of three strains for the Night capsule. We trust them, because these strains have been clinically tested and their multi-directional action on specific gastrointestinal problems has been confirmed.