L-Theanine:

L-Theanine: Identified by numerous studies as a safe natural sleep aid, this amino acid promotes relaxation without drowsiness. Unlike conventional sleep inducers,L-Theanine is not a sedative but promotes good quality of sleep through anxiolysis, -inhibition of anxiety. It is believed to achieve this through up-regulation of inhibitory neurotransmitters and possible modulation of Serotonin and Dopamine in selected areas. It has also recently been shown to increase levels of brain-derived neurotrophic factor.