Suntheanine contains pure L-Theanine, a unique amino acid found in green tea that is emerging as the premier natural product to support mental calmness and relaxation. Suntheanine is produced via a proprietary enzymatic process, guaranteeing essentially pure L-Theanine for maximum effectiveness. In a tasty tropical fruit-flavored chewable tablet. Recommended by Dr. Michael Murray, one of the world's leading experts on natural medicine.