Proviable if I am not mistaken is the one with montmorillonite clay vets use for cat with diarrhea , so too much of it can potentially cause constipation. Many strains is good as long as they are appropriate for cats do not have fillers like some kind of sugar,brewers yeast, cellulose ,potato etc. What works for one cat may not work for another. In any case, I always start with an amount much smaller and work up slowly as mine in super sensitive to avoid issues.I wonder why is that? As far as I can see, the active ingredient is indeed a probiotic strain, is it because it’s not an effective one? I’ve heard many people buy it for flavor enhancing for picky cats.
I’ve been using the Proviable by Nutramax, has many strains in it, but am looking for something more effective.