One of my housemates got some of the stuff and told me that it really helped him concentrate for exams. So I've been drinking it for a few days and it seems to really work well, though I don't know if that's just the placebo effect.
Anyway, I know of some people who drink it on a regular basis and swear by it. Anyone know the truth behind this stuff? I looked it up on Google but a lot of the places with informatoin about it are just trying to sell it.