Thought it was all hype, even read not to believe what you see on tv - lol, like you can believe what you read! I noticed 4-5 days, I was moving my bowels a lot, like cleaning out. Then it settled to daily, which is good for me. I knew it worked because I went off it for a week and back on, same cycle again! A great way to eat something healthy with extra benefits!
My favorite yogurt is Breyer's Fruit on the Bottom - black cherry - yum, like dessert. So, I've doubled up some days on the yogurt since I'm having the Activia every day. Can't hurt! Low-calorie, protein that I actually like. You can do low/fat-free if you want, not for me!