"firstly, i&#039;m 18, 5&#039;4, and 160lb when i started. i&#039;ve been on it for 3 days and have lost 4.8 lbs. i was going to hold off on my review but i experienced some side effects. this takes insomnia to another level, i would go to sleep at 6-7am just to wake up 5 hours later. these past 24 hours i have felt so lightheaded that i stayed in bed thinking i was going to faint out of dizziness and even while not moving in my bed after waking up, my heart would beat at a thousand beats per second. i drink plenty of water too. i also had unexpected diarrhea. needless to say the side effects are strong. i love the energy boost though."