L-theanine is a natural relaxant and, at the same time, a stimulant of mental activity. It accelerates the production of dopamine and serotonin — hormones that relieve nervous tension and anxiety — and also provides the following positive effects on the body:

Helps normalize nervous system function
Helps overcome depression
Reduces cholesterol levels
Improves blood flow
Strengthens the heart muscle
Normalizes blood pressure
Improves attention and memory
Stimulates metabolic processes
Restores sleep rhythm

Taiyoudo Pharmaceutical L-theanine has a tonic effect and increases resistance to stress.