L-Theanine is a non-specific amino acid supplement derived from green tea, Camelia sinensis, which helps to enhance the production of alpha waves by the brain. 

L-Theanine is one of the most extensively researched and documented nutritional agents. L-Theanine has demonstrated safety and efficacy in many applications including promoting relaxation, improving learning and concentration, heightening mental acuity, supporting the immune system and helping lower cholesterol levels. Theanine can also relieve stress and anxiety.

L-Theanine dosage range: 50-600 mg per day.