eh, I learned a lot the hard way with a lot of body building supplements.
Without trashing any sponsors, lets just say this, the guys who already have their shit together and who are juiced up are the ones seeing awesome results, there are no control studies to see how they would work under more average conditions.
A lot of average bros try the stuff and are left wondering why they didn't see dramatic effect, the answer is: lift heavier and eat more. Or if you are cutting, eat less and do more cardio, then you will see the products be more effective.
well, duh.
For me, it was neurogenix that killed it, i mean come on, a pill to make you smarter?