Theanine, also known as L-theanine, is an amino acid found predominantly in tea leaves, as well as in some mushrooms. It has pronounced relaxing and soothing properties, but at the same time does not cause drowsiness. Theanine helps improve cognitive function, helps increase concentration and attention, and reduces the effects of stress and anxiety. This amino acid has a positive effect on sleep quality and emotional well-being.

Theanine is often used as a dietary supplement. It is considered safe and well tolerated by most people. Theanine can be used to improve mental performance, relieve PMS symptoms, reduce stress levels, and improve overall psycho-emotional well-being. Despite the many positive properties, it is recommended to consult a doctor before starting to take theanine, especially if you have chronic diseases or are taking other medications.