**** yes it works! I took it for one month, then a month off and now have been on it for almost 1 more whole month. I take it 30 mins before workout. You can really feel when it hits you, it hits hard! They reccomend 2 to 2 1/2 hours pre workout but it was hitting me way before that. Anyways I get crazy pumps and vasularity with this stuff! You can really feel the blood flowing. Also I am totally focused, and ready for insane workouts every time! I stack it with sp250 and that seems to be the perfect combination for me!