Supplement Facts: L-Theanine
Second only to water, tea is one of the most widely consumed beverages in the world. With the exception of a mushroom (eg, Xerocomus badius ) and certain species belonging to genus Camellia ( C. japonica and C. sasanqua ), L-theanine is a unique amino acid found only in the tea plant. L-theanine was approved in Japan in 1964 for unlimited use in all foods (including chocolates, soft drinks, herb teas), except infant foods.
Clinical data
L-theanine is able to cross the blood-brain barrier and most research has focused on its relaxing effect. Brain waves were measured in 50 high-anxiety and low-anxiety human volunteers after the oral administration of 50 to 200 mg of L-theanine. L-theanine promoted the generation of alpha-brain waves, an index of relaxation, and induced a relaxed but nondrowsy state in the volunteers.
L-Theanine is a key ingredient in the SleepSmart complex. For further ingredients, please see our supplement facts page.
