Chronic colitis help

[Louie and me]

Sounds like you have tried most of the food ideas so a second visit to the vet is the best course. My vet always recommended plain rice, low/no fat cottage cheese and grated carrot for a couple of days if Louie had an upset stomach. The purpose was to clean out his system. It worked for me but then these were usually just isolated incidents.
Hope Autumn improves soon. It can't be pleasant for her or you.

[IRescue452]

Great news! Autumn has been going mostly solid since christmas. She's had the runs maybe once or twice but is mostly improving. I swear only a pet owner would want to hang a banner up on their door that says "hooray for solid poop" but I would if I had one.

[krazyaboutkatz]

I'm sorry to hear that she's been having diarrhea problems but I'm glad to now hear that she's doing much better. I was also going to say that you should get a second opinion. I don't have a dog but my RB cat Starr was diagnosed with both Colitis and IBD. I tried so many different kinds of cat foods but nothing seemed to work. He ended up having to be put on prednisolone for the rest of his life which unfortunately made him gain too much weight. Hopefully Autumn won't need to be put on any kind of drugs and you'll be able to control her problem with diet. Lots of prayers and positive thoughts are being sent her way.