Suntheanine® is a high-quality form of the amino acid L-Theanine which is found in tea leaves. L-Theanine promotes improved focus, attention and clarity, as well as a calming and relaxing feeling without inducing drowsiness. L-Theanine is most remarkable in its anti-anxiety potential during exposure to stressful conditions. L-Theanine works by stimulating alpha brain waves which are associated with an alert and relaxed state.