Promotes relaxation without drowsinessZen Theanine™ contains L-theanine, a calming amino acid which is beneficial for those who suffer from stress and anxiety, or those who find it difficult to focus, relax, or fall asleep. L-theanine is a unique amino acid found almost exclusively in green tea. It helps reduce nervousness and restlessness, promoting relaxation but without causing drowsiness. L-theanine takes effect within 30-40 minutes and  alters brain wave activity, calming racing thoughts and creating feelings of “zen” while promoting alertness and concentration. It influences the levels of the neurotransmitters dopamine, serotonin and GABA in the brain, balancing mood, sleep and even learning capacity. L-theanine reduces feeling of stress by inhibiting some of the actions of norepinephrine (a stress hormone) in the central nervous system.AOR AdvantageAOR’s Zen Theanine™ provides an optimal dose of L-theanine to provide fast-acting mental relaxation, with its stress reducing effects typically felt within 30 minutes of consumption.  Serving Size: One Capsule Suntheanine® (L-Theanine) 225 mg Suntheanine®: is a registered trademark of Taiyo International. Non-medicinal Ingredients: mycrocrystalline cellulose. Capsule: hypromellose. Adult Dosage Take one capsule daily without food, or as directed by a qualified health care practitioner.