The Metro helps but after a few days he gets too lethargic on it and I know Tylosin is an alternative med but I don't really know anyone who has a cat on it. Leo was diagnosed with mild IBD through biopsies and there were no signs of infiltrated cancer cells. He will get diarrhea off and on in cycles. His specialist did say Tylosin could be used but I was hoping to get some feedback from cat moms and dads for their experience with it.