Support digestion and maintain healthy flora with Swanson Acidophilus! While we normally think of bacteria as bad for us, there are certain "friendly" species, such as Lactobacillus acidophilus, that populate the intestinal tract, where they support digestion and help maintain a healthy balance of microflora. A great way to replenish your body's levels of these health- promoting allies, each capsule deliver over one billion viable organisms at time of manufacture.