I have been using Atkins Accel since my second month on Atkins. I think it helps, but I have been afraid (greedy) to stop really taking it and test whether or not it really works. I was out of town last weekend and I didn't take any while I was gone, I didn't exercise either. I didn't lose any weight while I was gone, but didn't gain any either. Back home, stabilized my meals, starting taking Accel and exercising again and losing again.