Thorne Theanine 90cThorne Theanine supports a healthy stress response, relaxation, mental focus and memory. L theanine is a unique amino acid that is found in the tea plant (Camellia sinensis). L theanine enhances the production of the neurotransmitters dopamine and serotonin, and plays a role in the formation of GABA (a neurotransmitter that acts like a "brake" during times of stress). L theanine also enhances brain alpha wave activity, a marker of relaxation.