I started using this a couple weeks ago, and it definitely gives you a boost in energy. Make sure you stick with the recommended dosages at first though, it's just a little scoop and I thought I could start with 1 and 1/2 scoops at first because I have a high tolerance. I was wrong, this stuff is powerful. When used right, this stuff gets you ready to work, focus and you don't want to stop.- Bo C, Kent WA