ok. i tried it again today i took 2.5 scoop, this time on empty stomach nothing else. energy was dirty concentration didnt come on till half way during workout, feel very jittery did not enjoy this in terms of focus, as for energy it was very mild made me somewhat anxious, but as for pumps i give it a 9/10 very good pump similar to what i get from jack3d mirco and the best workouts from that i only ever took 1.5 or less, i dont know why but comparing the times ive used that to this i would rate that much higher because it gives just as good pumps but, the energy from that was much more controlled and intense made me a machine. this however i just didnt get that spark.. overall i am very dissapointed i feel i have bought into the hype. but i also got alphamine which i took yesterday, now that is much better lol in terms of energy and alertness.