the pills really do work. I stopped taking stacker over a year ago and i stopped my routine workouts and i gained 40 lbs in just one year! I was so frustrated and dissapointed at myself so i started going to the gym but i was finding it hard to motivate myself to do anything while at the gym. I just started taking stacker3 for one week and already i have dropped almost 10 lbs (of course with excersise as well) This pill not only helps with energy but as i have read, it also works as a metabolism enhancing property! Thank you NVE for a great product. THe only negative thing about it is that i sometimes feel dizzy and a numbness to my fingers. (that was the reason i stopped taking it in the first place but its really not life threatening or as serious as it may sound)