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The Sally T. L-Theanine Supplement - 300 mg, 60 Capsules should be considered as a herbal remedy rather than a supplement since it's not found naturally in your body. Theanine is chemically an amino acid (though it doesn't form part of any protein) - and like all amino acids, comes in 2 mirror image shapes: L-Theanine and D-Theanine. It's the L-Theanine form that is active while D-Theanine does nothing at all in your brain.
Evidence from human electroencephalograph (EEG) studies shows that it has a direct effect on the brain. L-Theanine significantly increases activity in the alpha frequency band which indicates that it relaxes the mind without inducing drowsiness (beta waves are associated with alertness, while alpha waves are associated with a more restful, relaxed state). Many of these studies were done on anxiety sufferers. However, people who are prone to anxiety tend to naturally have more beta wave activity, than alpha.
Theanine boosts GABA (an inhibitory neurotransmitter) in the brain, and it also tones down some of the stimulating neurotransmitters that make you anxious. It has also been shown to boost brain dopamine - which is one of the "feel-good" neurotransmitters - and this might be the reason many people report feelings of well-being and mental focus when they take Theanine.
Which is better for anxiety - GABA or Theanine? GABA is found naturally in your brain, and low levels seem to be related to some types of anxiety. So it makes sense that you would want to increase your GABA levels if you are suffering from anxiety. Some people have great results from taking a straight GABA supplement. But it doesn't cross into the brain very easily, so most of the GABA taken might not get to where it's needed, and it's hard to regulate your brain levels this way. On the other hand, Theanine does cross the blood-brain barrier quite well, so it is an effective way to boost brain GABA.
Amount | 60 Capsules |
L-Theanine | 300 mg |
Free Shipping | No |
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