@Charred - I can’t say that I know of any science that will back you up, however I do share some of your skepticism about tablets, especially the herbal kind. Too often you don’t really know what’s in those tablets, and of course the FDA doesn’t regulate that stuff.
So it’s always a shot in the dark in my opinion. As for me, however, I do prefer food sources for my good bacteria. I remember it was Hippocrates that said, “Let your medicine be your food, and your food your medicine.”
For example, I have always known that wine and chocolate were good for you. They have antioxidants and so were recommended for people with heart conditions.
I’ve always had some red wine with an evening meal and a dark chocolate here or there. I am pleased to discover that these foods deliver good bacteria to my system as well. That’s killing two birds with one stone.