The cheapest and safest "nootropic" there is is exercise.
Students dramastically improved their grades in several schools once they were made into exercising with a heart rate monitor (higher heart rate - higher grade) every day:
Hehe, I was in a rush while writing that post, it wasn't intentional. I'm not sure which word I intended to write (probably a little bit of both). :)
That being said - it's a fun new word that's actually pretty accurate in this situation. The improvements were drastic, and how drastic they were shocked a lot of people (the drama).
Students dramastically improved their grades in several schools once they were made into exercising with a heart rate monitor (higher heart rate - higher grade) every day:
http://www.amazon.com/Spark-Revolutionary-Science-Exercise-B...