Lee Swanson's Ultimate Probiotic Formula is a very powerful probiotic supplement. Each capsule contains over 66 billion organisms. Furthermore, it includes more than 20 billion acidophilus organisms along with select cultures such as the famous Kyo-Dophilus. But there is much more. The formula also provides 100 mg of prebiotic NutraFlora, a short-chain FOS, which in turn nourishes probiotic organisms and helps them become stronger and develop. Remember to take the product with food as per the instructions on the label. This will raise the pH level of your stomach up to 3 or 4 times, which does not allow the organisms to be destroyed by the acid of the gastric juices and eliminates the need of enteric coating.