L-Theanine is what gives the tea its relaxing, anti-stress appeal. In this concentrated form, it creates a focusing anti-anxiety effect that is valued in itself and is also used to take the edge off other nootropic compounds.

Often taken with an early morning coffee, L-Theanine reduces the jitters and anxiety of caffeine whilst amplifying the cognitive benefits, creating clean and lucid energy. It has a similar mellowing and amplifying effect on Piracetam, Phenylpiracetam and Adrafinil.