L-Theanine is a naturally occurring amino acid found in tea leaves, particularly green tea. It is known for its potential calming and relaxing effects, and is often used as a dietary supplement to reduce stress and anxiety and support cognitive function.
Research has suggested that L-Theanine may promote relaxation by increasing alpha brain waves, which are associated with a state of calm alertness. It has also been shown to help reduce stress and anxiety, potentially by modulating levels of certain neurotransmitters in the brain.
In addition to its potential calming effects, L-Theanine has also been suggested to support cognitive function and mental clarity. It may help to improve focus, attention, and reaction time, and may also help to reduce the negative effects of stress on cognitive performance.