Yeah, I ordered a bag of it for my wife, who is a college student. She likes it for when she studies, says it helps her concentrate. I think we got it from Powder City. Admin, if there is a competing sponsor for it here, feel free to delete that part. I just don't recall seeing anyone here selling it.
Also, she has noticed no sides from it. I have used it also, and it seems to do the same for me. I just dump it under my tongue and wash it down. It is bitter as hell. Hope this helps.