Nootropics - what are they? In short: Brain-fuel! These supplements are a blend of vitamins, minerals, amino acids, herbs, roots, and other naturally occurring compounds. The combination is meant to reduce "brain fog", and promote increased cognitive function. Just like most other vitamin supplements, you won't feel a "rush" as you take this - rather, the extended use will supply the brain with excess nutrients to make sure it is never deprived when you need it most!