Don't know started with max dose. then went on to scrunching my days dose before my workout. I used Ripped fuel and Hydroxycut both have caffine which my body isn't used to (don't drink coffe never drink soda) so I got big ass boosts of energy but from caffine or the E not sure.
I started out with 2 pills a day and went to 4 pills a day after the second week, and yes I did feel a good boost in energy, also thats when I started to drop weight. hope this helps.