Bests & Worsts Reviews from Amazon

I tried culturing a capsule from two different bottles of this product in milk and neither one cultured. They developed a bit of cultured yogurt smell, but neither one thickened up in the slightest after 40 hours in warm conditions, and since they contain multiple dairy strains, if there were living bacteria in there, they should have. I have done this test with an "El Cheapo" brand, and it thickened up nicely within 24 hours. I don't trust these at all. Perhaps there are other variables im not yet aware of RE; the 'milk test,' but my current understanding is any probiotic containing dairy strains should thicken up