Helpful idea for kitty with the wonky tum tum

The student who works for a vet said that one thing they stock and prescribe for kitties with tummy troubles is something called FortiFlora. It's not cheap but I'm definitely going to bring it up to see if they have it or will give me a script for it. I'd much rather a supplement for food she'll already eat rather than prescribing some Hills or something that she won't eat. Any fellow cat folks ever try it?