I find that the product has worked for me. I do detect a better energy level and alertness. The Shakes are great and I take the capsules. Unfortunately, my skin reacts negatively to the Patch. Itching and Skin Welts. I went to keeping the patch on for just 12 hours instead of the recommended 24 hours and I still got a skin reaction; no matter how much I rotated the patch locations. I've also talked to other members of my gym who use the product and it's pretty much split down the middle for skin reactions. You either have a reaction or not. It's something to be aware of.