I let a few guys try some samples from my bottle:
My Father- 2 tabs taken at 8am kept him up through the day and all night. Gave him too much energy and acted as a crazy dihuretic on him. He took one tab then next day and was again too much energy for him.
Kyle- Took 2 tabs and had crazy energy and tehrmogenic effect. Next day he took one tab and he loves it!
Kenneth- Takes 2 or 1 tab and loves it. Crazy thermo effeect and amazing focus. Lost 4lbs in 4 days he was on it (overweight guy)
Jeff- Takes one tab for nice clean energy, no jitters, no neg effects.