Bene Bac vs Fortiflora?

They seem to have very different ingredients. We've never used probiotics in our cats - but we have a foster right now that we're having trouble getting his diarrhea under control. He has no parasites (poo tested 3 times now).

We fasted him for 24 hours, put him on a boiled chicken diet, and gave him kitty immodium (forget what it was called, it was a vet scrip) and an antibiotic that treats issues in digestive system without killing the healthy bacteria. This was for over a week. It slowed up his system, and changed his poops from watery to formed, but extremely loose stools, and he's very gassy.

We slowly started adding Blue Wilderness limited ingredient food - wet and dry to the boiled chicken/chicken water diet, and two days ago we started with the Fortiflora probiotic.

From everything I've read, it seems the addition of probiotics to the diet is a good idea period.

But looking at the ingredients of Fortiflora, there seem to be a number of minerals in there - and that worries me for our existing kitties, as all of the boys have had problems with crystals.

Anyone familiar with this issue and have any thoughts on one being better than another? Is the Fortiflora safe for kitties that have had problems with both struvite and calcium oxalate crystals?

And any idea how soon (or long) we may have to wait to see an improvement in his stools if this is going to work? I don't want to start switching foods too early.

Thanks!

Well, he had his second dose of Fortiflora yesterday, and his poos went completely watery - so much so that there were little watery drips outside the box, poor boy. So we are going to stop the Fortiflora.

We'll give it a couple of days. He'd made so much progress - I mean - at least he was pooping once a day, formed stools, even though still soft. This morning the litter boxes were a mess - he obviously went poop a lot of times. I feel terrible.

Well, he had at least two really water poops overnight (12 hours), so we're putting him back on kitty immodium to at least slow up his system. At least he's still very hydrated. *phew*

We're going back to just boiled chicken/chicken water, but will add some white rice to it. We'll probably just start slowly introducing him to the same food we feed our cats (Science Diet C/D) as it looks like we may end up having to foster him here. Haven't had a single call on the boy yet. (Which is not so bad considering we haven't cleared up his diarrhea yet).