Superb Product!
This really is by far the best probiotic on the market for dogs. I have tried many, and some even more expensive than this with limited success. It has firmed up my collies poos brilliantly and he is no longer getting stomach discomfort.
The strain of probiotic it contains is E Faceium SF68, which has excellent research behind it that proves it works and also improves the immune system. Can't recommend this highly enough!