L-theanine is an amino acid found in tea leaves. It was first identified in tea by Japanese scientists in 1949.
L Theanine Benefits
Reduces levels of “excitatory” brain chemicals. At the same time it is increasing chemicals that promote feelings of calm, L-theanine also reduces levels of chemicals in the brain that are linked to stress and anxiety. This is the main way that L-theanine can protect brain cells against stress and age-related damage
Enhancing attention, focus, memory and learning: Under stress, the body increases production of certain hormones, including cortisol and corticosterone. These hormone changes disrupt some brain activity, including memory formation and spatial learning. L-theanine helps to lower levels of the stress hormones, and avoid the interference with memory and learning.
Improving sleep. By promoting relaxation and lowering stress L-theanine may help people fall asleep more quickly and easily and also can improve the sleep qualityEnhancing attention, focus, memory and learning: Under stress, the body increases production of certain hormones, including cortisol and corticosterone. These hormone changes disrupt some brain activity, including memory formation and spatial learning. L-theanine helps to lower levels of the stress hormones, and avoid the interference with memory and learning.
Dosage
The following doses are based on amounts that have been investigated in scientific studies. In general, it is recommended that users begin with the lowest suggested dose, and gradually increase until it has an effect.
For sleep, stress and other uses: 100 mg to 400 mg
In combination with caffeine: 12-100 mg L-theanine with 30-100 mg caffeine /one coffee/
What to know
Promotes levels of GABA and other calming brain chemicals. L-theanine elevates levels of GABA, serotonin and dopamine.L-theanine may help boost other cognitive skills. Research shows L-theanine can increase attention span and reaction time in people who are prone to anxiety. It may improve accuracy—one study shows that taking L-theanine reduced the number of errors made in a test of attention.