My goal with using this supplement was to increase my alertness. Did not expect it to work so fast. I had this with my morning coffee, just 1 and damn. I've been on fire since then. This appears to increase your mental energy and alertness. At least that is what it did for me. It effectively eliminated my mental fatigue. Highly recommend this to anyone wanting to keep the sleep monster away. LOL. Good luck. Hope it works for you also.