I haven't been taking it long enough to evaluate it. It might be causing some diarrhea, which is not a reason to give it a good rating, but I haven't decided yet. Anyway, the reason I'm writing is because I have already received another shipment of two bags this time, instead of one. That's 600, plus the 250 or so still left from the first shipment, so, at two a day, I shouldn't need any more for about a year or so, right? So, perhaps we should cancel this subscription. If I decide I want more, I'll let you know.