There are many science fiction ideas of humans increasing our potential with super human abilities to read, learn, study, move. Equally there are technologies out there that make some of these ideas real like bionic arms, military grade vision enhancement and much more, but what is the latest things that can be used today.
The Theory (As Advertised by the TV Show Limitless)
A nutrient that is also medication to enhance your thinking and brain power.
To learn more about the brief pilot you can reach it on the Movie Internet DB
or the wikipedia article.
What You Can Get Now That is Real
GreenAlgea is one of the only vegtable tablets that gives you all of the same amino acids you would get in meat. It is a SUPER FOOD.
It grows naturally in lakes under certain conditions
You can buy it here