vomiting and bacterial overgrowth
Our 5 year old cat Simon (neutered, indoor-only) has vomited chronically since we got him at 6 months old. After tests and vet visits we were told Simon would probably be a chronic vomiter. He only vomits after eating too fast, and two vets said as long as he didn't lose weight, have diarrhea, etc. he'd be fine. So far that's been the case. He usually vomits 2-4 times a week, but sometimes he will go a week or two without incident.
Four months ago Simon found a thread and needle and swallowed it. When at the vet for emergency surgery, my husband mentioned in passing that Simon throws up a lot. For whatever reason they didn't realize Simon already had this checked out at their office, so they did an intestinal biopsy while in removing the thread, to determine the cause of the vomiting. It was a surprise to us, we didn't know they were going to do a biopsy. Since they're a student hospital (Kansas State) we figured someone just got overzealous.
They said Simon had an overabundance of 3 kind of bacteria in his intestines and he needed antibiotics. They gave us liquids instead of pills, even though we asked for pills, and Simon got very little of the antibiotics. He drooled and spit it all out, wouldn't eat food we put it in, etc. When told, the vet said the antibiotics probably wouldn't have helped anyway.
So we've just kind of left it, but recently he's been on a vomiting spree again. He's vomited 1-2 times a day for 4 days, and has had some moodiness I posted about elsewhere which may be related to the vomiting. Otherwise he's fine, has a good appetite, solid poops, plays with toys, etc.
Since Simon also needs to lose weight (he's about 4.5 pounds too big), I called the K-State vet med to ask about food. I kept getting passed from vet to vet because no one wanted to deal with it. Finally I got a vague appointment for next Wednesday and they want to do tests again. This will be the 4th set of tests they've done and I'm certain it's always the same tests (except the biopsy, that was new).
Since then I've been looking online and found almost nothing about bacterial overabundance. Finally I found several websites which said cats don't get bacterial overabundance in their intestines. Dogs do, but cats don't.
So now I'm pretty frustrated. I've gotten the impression that there's really no treatment for this, and if Simon's not dehydrated or losing weight, it's not a problem. Continuous testing for no reason isn't going to help. I'm wondering if anyone's dealt with this kind of thing before, if those websites were wrong or misleading, and what all I should ask the vet.
Thanks, and sorry this is so long.