I'm just glad I found a probiotic that works. I've tried one other kind and was so disappointed when it did absolutely nothing. I have a number of reasons for thinking I may benefit from getting some extra good-bacteria. I've been on antibiotics a number of times (foot surgery, wisdom teeth, UTI, etc) and also I heard being on BC pills can affect it too. There's some debate about chlorine treated water (tap water) affecting good gut bacteria too.
I went up to the 1 bottle about 7 days ago. So I did the 1/2 bottle for about 2 weeks I think, until the stress was gone. I didn't feel comfortable upping my dose until my stomach calmed a bit.