Modafinil has been used to enhance cognitive functions such as concentration and alertness.
This drug was originally designed to help sleeping disorder (narcolepsy).
“Modafinil for cognitive neuroenhancement in healthy non-sleep-deprived subjects: a systematic review” by R.M. Battleday, A-K. Brem presents a new study corroborating those cognitive functions benefits.
Never bad to keep in mind all sorts of psycological, force of habit, social and other forms of potential addictive side effects…