From the Manufacturer's Label:
55 billion active cultures per capsule to help maintain healthy gut flora*
Enteric-Coated Vegetarian Capsules
Probiotic 55 Billion is formulated with 10 strains of viable organisms including 30 billion Bifidobacterium CFUs and 25 billion Lactobacillus CFUs, the bacteria most dominantly found in the large and small intestines.
Manufactured by Trace Minerals Research