L-Theanineis a naturally occurring, unique amino acid found in green tea leaves. PDLabs’ L-Theanine is Suntheanine®, the most respected source and the one which has been used in scientific studies. L-Theanine may promote a sense of relaxation without causing drowsiness.* It has also been found to promote healthy cellular function and reduce feelings of stress and anxiety.* Relaxation support is enhanced by the synergistic effects of the added chamomile extract.*