My Sally has been on Purina's probiotic for the past 15 days. The vet put her on it because of constant diarrhea along with a 5 day dose of antibiotics. I have never heard or used a probiotic before and have read what I can on the subject. My Sally's diarrhea is gone and Sally who is all black now has the shiniest and softest cost ever in the 8 years I have her. Is this from the probiotic? Sally also used to have a tick where she would pull at her coat on her back and she has since stopped doing that as well. Is it really possible? If these are the results can I give probiotic's to all my cats? I have 7 cats in total. I have read all the threads regarding probiotic's on TCS. Any disadvantages from using these as well? I have a 4 month old kitten up to a 20 year old Momma. Your reply is very much appreciated. Rose