Solgar L-Theanine 150 mg is an amino acid not present in food and a natural phytochemical. We use the Suntheanine® patent Many people turn to a comforting cup of tea when they are under stress. This may be due to L-theanine, an amino acid commonly found in green tea. In 1949 it was discovered to be one of the components of green tea and in 1950 it was isolated from the gyokuro leaves. It is also L-theanine that brings the tasty and exclusive flavor (umami) to green tea infusions. L-theanine is not only found in green tea, but also in black and white tea from the Camellia sinensis plant. L-theanine is an amino acid. Amino acids are the building blocks of protein and are necessary for many functions in the body. They are generally divided into "essential" and "non-essential". Essential amino acids are those that the body cannot produce but must obtain from the diet to maintain good health. However, L-theanine does not belong to either of these two categories, essential or non-essential, because it is not frequent in the diet and the body cannot produce it. It has a chemical structure similar to a type of neurotransmitter amino acid, glutamine, naturally present in the body. L-theanine crosses the blood brain barrier and can affect brain wave activity. Solgar L-Theanine 150 mg is taken 1 capsule twice a day and is presented in a comfortable, easily absorbed vegetable formulation. All Solgar products meet the strictest criteria of excellence in the sector. Made from natural ingredients and innovating since 1947, Solgar is the recommended food supplement - 98% of Solgar users recommend the brand * * Global Praxis online buyers survey of 2017, in which 3,882 consumers of vitamins, minerals and food supplements participated. Food supplements are not a substitute for a varied and balanced diet and a healthy lifestyle. • L-theanine is an amino acid found in green tea • Natural phytochemical • Can cross the blood-brain barrier • One of the highest quality Solgar amino acid range products • Suitable for vegans, vegetarians and kosher Take 1 capsule, 2 times a day, vegetables a day, preferably between meals. They have not been described.