- Anonymous1 decade agoFavorite Answer
I took one...I think I know the ones you are talking abt...the ones you buy at GNC??...well I took those and as soon as I took a small gulp...you feel it, DONT take coffee with it or anything else that migh have more caffeine cuz it will def make you get crazy anxiety. I think they work on a fed stomach..
- 1 decade ago
I took one before class and was shaking all day.