L-theanine reduces stress and relaxes your brain by increasing alpha wave activity. Alpha waves are those that occur when you are awake, alert and relaxed. They help you to concentrate and promote creativity. L-theanine, which exerts its stress-reducing effects without causing drowsiness, is also able to cross the blood-brain barrier.
L-Theanine is a supplement extracted from tea and believed to be key to many vital functions including that of focus, relaxation and immune system strength.
L-Theanine does cross the blood brain barrier to increase relaxation and stimulate neurons and dopamine production.