Liposomal GABA with L-Theanine contains GABA (gamma-aminobutyric acid) and L-Theanine, both known to promote mental and emotional calm without impairing focus and attention. GABA serves as an essential calming agent for the body, helping to combat stress. L-Theanine is an amino acid found primarily in tea and various mushrooms. It crosses the blood-brain barrier and is known to block the binding of glutamic acid to glutamate receptors in the brain and has been thought to induce anti-stress effects by inhibiting the excitation of cortical neurons.