Theanine is the predominant amino acid of tea that produces calming effects in the brain by increasing levels of serotonin and dopamine, and blocking the binding of L-glutamic acid to glutamate receptors.
What is L- theanine anyway? It has become quite well known due to its incorporation in the broad array of energy drinks that are currently on the market. More than fifty (50) years ago the Japanese discovered that tea leaves contain an amino acid called L- theanine which has amazing relaxing effects.
Theanine is an amino acid and a glutamic acid commonly found in tea, primarily in green tea. Most specifically, this compound is called L- theanine. As it is digested in your small intestine, L- theanine stimulates your brain’s production of alpha waves, which make you feel relaxed and alert at the same time. Orally administered L- theanine is absorbed through the intestinal tract and hydrolyzed in the liver to glutamic acid and ethylamine.
Medical studies have proven that L- theanine is effective in relieving stress and anxiety without the tranquilizing effects found in many other calming supplements. L- theanine also helps you stay relaxed by stimulating your body to produce other calming amino acids, such as dopamine, GABA, and tryptophan. According to health care practitioner the suggested dose for L- theanine for relaxation and enhancing dopamine levels is 200mg or one (1) capsule
Theanine is one of a few dietary supplements that have the ability to cross brain barriers. It is also responsible for suppressing glucocorticoids, which is a stress hormone.
Glucocorticoids are activated by stress and other elements such as depression.
Glucocorticoids block some of the brain chemicals such as dopamine, serotonin, and norepinephrine, which are all responsible for human relaxation.
There are certain drugs that block glucocorticoids and can be a treatment for stress and certain types of depression. Even drugs with a side effect of blocking glucocorticoids such as ketoconazole can do the treatment. But still, theanine as a dietary supplement is a clear way to prevent stress and depression. Falling sleep is not just the primary effect of theanine.
Recent researches in Japan prove that theanine has the ability to give a person quality and continuous sleep. The effect of theanine does not make people to sleep longer, but rather a better, more quality sleep. Theanine is best for people who needed to do more and sleep less.