Digestive health. 1 billion CFU per capsule. Nutritional supplement. maintains a good balance of beneficial bacteria in the gastrointestinal tract. Supports bowel regularity. Helps maintain gastrointestinal health. Scientific quality since 1969. Supports Digestion and Supports Healthy Flora with Swanson Acidophilus ! While we usually think that bacteria are bad for us there are certain "friendly" species such as Lactobacillus acidophilus which inhabit the intestinal tract where they support digestion and help maintain a healthy balance of microflora. A great way to replenish your body's supply of these health-promoting allies. Each capsule contains over a billion viable organisms at the time of manufacture.