When I adopted my 5 week old kitten "KatiKat" she had severe diarrhea for over 3 weeks. After all the testing was negative and the diarrhea continued, we spent over 5 hours in an emergency pet hospital...we thought we were going to lose her. I contacted the animal shelter and she told me to feed her ONLY FRISKIES OCEAN WHITEFISH DINNER. It worked!!! 1 month later, my KatieKat is strong & healthy. If your kitten has diarrhea with no known cause, please try this.