I took Bactose after seeing an IG ad, I took it for 7 days, after I could literally have any dairy I want for about 4 weeks which fell short of their claim of months. I contacted them and they explained it's not your average L.Acidophilus it's a super strain that produces an abundance of lactase enzymes in the gut. The problem with most probiotics that is that it's a placebo effect, you legit cannot effect diarrhea and gas with a placebo, either it works or it doesn't, for me it worked and it was glorious....