I have been using these probiotics for my son who has special needs. He has experienced a "leaky gut" for years. We have also been using Marshmallow Formula. These tablets are so good that we have just been discharged from the Consultant who says that my son's bowel movements are close to "normal" and we do not need to see him any more. Yipee!This is the first time in nearly 4 years that we have seen any improvement whatsoever!