Natural Factors Acidophilus & Bifidus 5 Billion Active Cells 180 CapsulesIngredients Medicinal Ingredients Each Capsule Contains Amount Per Serving 5 billion active cells* of the following specially cultured strains of probiotics Total Bacterial Culture 5 billion cfu Lactobacillus rhamnosus (HA 111) (whole cell) 80% 4 billion cfu Lactobacillus acidophilus (HA 122) (whole cell) 10% 0. 5 billion cfu Bifidobacterium bifidum (HA 132) (whole cell) 10% 0. 5 billion cfu cfu: colony forming units Non Medicinal Ingredients Lactose,