I know the first day I took it, I just took one in the morning and that was it. My heart did race but after a few days with just one I was fine. This morning I took 1 and then just now I took 1/2. Right now I'm basicly just taking it as an energy boost. It helps me stay awake at work. I definately will not be taking the reccomended 6 tablets EVER!
STG 1, 290 accomplished: 10/16/2010
STG 2, 280 accomplished: 11/13/2010
STG 3, 270 accomplished: 12/17/2010
STG 4, 260 accomplished: 04/20/2011
STG 5, 250 accomplished: 07/02/2011
STG 6, 240 accomplished: still waiting!