Theanine 100 Mg 60 Caps by Jarrow Formulas is an advanced supplement for neurochemical intervention and cognitive optimization. It is formulated with pure L-Theanine (Suntheanine®), an amino acid that promotes alert relaxation and improves mental focus without inducing drowsiness. Using isomeric fermentation technology, this product replicates the natural left-handed form of theanine found in tea leaves. L-Theanine effectively crosses the blood-brain barrier, acting as a glutamate analog to reduce neuronal excitation and stimulate the production of GABA, dopamine, and serotonin. This action improves mental relaxation and increases alpha wave activity, sharpening attention and visual acuity. The product is of the highest quality, free from synthetic additives, and certified under good manufacturing practices. It is also suitable for athletes needing cortisol balance after training. Store in a cool, dry place. Not recommended for children, adolescents, or pregnant women without medical approval.