it'd decieving...Yes it burns, but it's not really painful, you're just aware it is there. If that makes sense.
There is another log on here somewhere where someone actually took measurments while taking it. I was too lazy to do that, but it looks as tho it's working.
My wife made a comment to me the other day that she noticed a pretty big difference. She wants to try it now (she doesn't really need it tho cuz she's tiny but you know how women are).
I think it would work very well while on a maintenance level of calories. Not sure if it'd have any effect on PCT don't think that it would but i'll let orbit answer that for you.
All in all I would highly recommend this product to anyone.