L-Theanine is an amino acid naturally found in green tea leaves that promotes a state of calm alertness. When paired with caffeine, L-Theanine creates a synergistic effect that smooths caffeine's stimulatory properties while enhancing its cognitive benefits. This powerful combination helps eliminate the jittery feeling often associated with caffeine consumption, promoting sustained focus and mental clarity without stress or anxiety. L-Theanine also supports alpha brain wave activity, associated with relaxed attention and creative thinking.