Where do you buy it at? I've seen a lot of postings about it, but I haven't really looked into it. Is it used like a supplement for mental alertness or something? If so I'll be the first to admit that I could use some help. Especially when I'm reading and typing. I really get distracted a lot when I'm reading so if it would help with focus I need it for sure. lol I have too many distractions sitting in my lap most of the time.