I tried it the other day...I forgot to post about it sooner.

I took it before doing a hard workout. I didn't care for it. I prefer my own pre-workout shake of citrulline malate, creatine, beta alanine, maltodextrin, and dextrose. Compared to my own mix, it didn't give me as much energy...rest time was longer. I didn't feel any increase in power...if anything it was a decrease. I was pissed about the workout at the end just because I felt like it took forever to recover between sets and I didn't have as much power at the end as I normally do. I didn't notice any pump or anything like that...no more than what I normally get. It's expensive. It gave my roommate the shits when he took it.