Our little cat came with 10Wochen and diarrhea with us. The medication from the vet have not injured and he was in top shape except for the diarrhea. He swept like a madman through the house and had a big appetite. As said the veterinarian: only dry food to the intestine is OK. Since me the diarrhea but very disturbed and I felt sorry for the little one, I have even done me informed and have then decided on Bactisel. It builds the intestinal flora by the colony forming units on ducks (similar to yogurt, but that is not in cats). For 1 week (important !, is also so on the package) every day 1 serving spoon (enclosed) mixed's feed. Was well received and behold: diarrhea after 2 days better, fixed after 4 days feces. So far, everything is good, no diarrhea, and the little man's fine. Clear recommendation!