Lactobacilius can almost certainly be fermented in milk, they convert glucose to lactate. As such if you take a few of those pills and crush it up into some milk and then make yoghurt from it, say 38C for 24 hours you can probably increase the dosage of bacteria to the region of 60+ billion in 120ml or so of milk. There is a whole host of species that fall under this species that potentially behave quite differently but this species is the most common probiotic found in yoghurt and if you want very particular species you can make your own. I have been making L reuteri and bifidobacterium Longum "yoghurt" recently so its possible to do this with a variety of different bacteria although mine have required inulin fibre to really work. Lactobacilius will happily eat the lactose in the milk and if you leave it longer it will multiple more, a bit of inulin and 36 hours and it will be utterly rich with whatever you started it with but it will also be pretty acidic and the proteins denatured as well.