Swanson Amino Acid Double Potency Suntheanine L-Theanine delivers 200mg of premium L-Theanine per serving to support relaxation and focus without drowsiness. This non-essential amino acid, naturally found in green tea, is renowned for its ability to promote states of calm alertness, making it ideal for managing daily stress or enhancing concentration during cognitive tasks. Each dose helps promote a tranquil state, facilitating mental clarity. It is an excellent addition to a daily wellness regimen supporting overall mood balance.