Source Naturals - L-Theanine, 200 mg, 60 tablets
A unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea.  Preliminary human studies have shown that taking L-Theanine results in the emission of brain waves associated with a state of relaxation.*  Each capsule contains 105 mg of Calcium and 200 mg of L-Theanine.