IBS and IBD are, as you know, not the same thing, even though they share many symptoms. For an IBS dog, the number one most important thing is to remove ingredients that the dog has an intolerance to. Second, is to calm the intestines. Adding some slippery elm or phytomucil may help towards that goal. My IBS dog has never had a recurrence, no matter what fat or protein level I feed him, except when I have inadvertently given him something he reacts to, so figuring out what they are reacting to is a big part of their management.
If your dog is having diarrhea, the consistency of the stool will provide clues to what else you can do to help. If it is like pudding, then the large intestine is not absorbing all the fluid back into the system and adding fiber may help to slow things down and give the large intestine time to work. If the stool is watery, then it’s small intestine diarrhea, and a low residue diet, low fiber and easy to digest, may help.
