You awesome people were so responsive to the picture of Tommy that I posted yesterday so I was hoping some of you might be able to chime in with your IBS experiences because he has it and none of my cats have before. I got Tommy a few months ago. He had been surrendered after having crystals and was eating prescription food for that. He had diarrhea however and tested negative for parasites. It sounded like the vet only even bothered testing for parasites because he had been in a shelter, I guess it isn’t normally seen in this area with normal housecats. Anyways there was some intermittent improvement with an antibiotic so the vet changed him to a food that is safe for crystals but designed for ibs. He was fine within 2 days of starting this food but the last 2 days I could hear his tummy gurgling and now he has diarrhea again. He hasn’t eaten anything off diet except for hay, which I think he got into because his tummy already wasn’t feeling well. FWIW I’m calling the vet when they open to leave a message and get his Dr’s thoughts, but wanted to also see if anyone else has had this experience. Is it common with cats who need prescription food for digestive issues to improve then relapse? Will this probably be something he just goes through every once in a while? I do know that my sister’s cats eat a different food (same brand but different prescription formula) for diarrhea and she finds some every once in a while and then they seem fine again.