Just picked up a bottle from the vitamin shoppe last night and took my 1 this morning on an empty stomach. I reallyyyyyy wanted the mood enhancing effect most talk about (at least those who recieved an early batch or samples it seems). An hour later I definitely was going strong but not in the way I wanted. It was very very stimmed out and not like the happy/focus most talked about, more like a ton of caffeine. It lasted a few hours and that was about it. Not feelling much now and certainly not the good mood/smooth energy I've read about. I will see if anything changes over the next few days and am very curious why so many early users touted the long lasting focus/mood altering aspect. Please feel free to comment with other experiences or maybe here from a rep? Thanks!