Liposomal GABA with L-Theanine features GABA (gamma-aminobutyric acid) and L-theanine, both well-regarded for promoting mental and emotional calm without impairing focus and attention. GABA serves as a critical calming agent for the body, helping to combat stress. L-Theanine is an amino acid found mainly in tea and various fungi. 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 considered to cause anti-stress effects by inhibiting cortical neuron excitation.