L-Theanine is an amino-acid naturally found in green tea. It has many benefits including antioxidant effects, immune and cardiovascular support, but it is primarily used to promote a positive mental state. L-Theanine helps to calm and focus the mind, reducing anxiety and increasing alertness without causing drowsiness or any of the associated negative effects that caffeine can produce. During the day L-Theanine can increase concentration and relieve tension and at night it can help to relax the mind for a more restful sleep. HealthAid? L-Theanine tablets are specially formulated using the purest form of L-Theanine and can provide perfect support for those with hectic lifestyles.