Category Archives: L-theanine

Tea (Camellia sinensis) and Anxiety

Posted on April 18, 2024 by Robert Barrington

Tea (Camellia sinensis) has a large body of research supporting its various health effects. These effects relate to the presence of a number of different phytochemicals within tea including flavonoids, the amino acid L-theanine and a number of methylxanthines including … Continue reading →

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L-Theanine and the Brain

Posted on March 21, 2024 by Robert Barrington

L-theanine (N-ethyl-L-glutamine) is a non-proteinaceous amino acid that is found in high amounts almost exclusively in tea (Camellia sinensis). In fact, L-theanine accounts for around 50 % of the amino acids in tea leaves. L-theanine is structurally similar to glutamic … Continue reading →

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Why Does Tea Create Calmness?

Posted on January 26, 2024 by Robert Barrington

Tea is known to induce a state of calmness and this is verified through both anecdotal and empirical evidence. The reason for this may be sereralfold, but one of the main mechanisms is suggested to be the fact that tea … Continue reading →

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L-theanine: Psychotropic Effects?

Posted on December 6, 2023 by Robert Barrington

L-Theanine (N-ethyl-L-glutamine) is a non-essential non-proteinaceous amino acid that is found in its free form in tea. Evidence suggests that L-theanine from tea or in supplements is able to cause relaxation by induction of alpha wave states in the brain. … Continue reading →

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L-Theanine to Reduce Stress

Posted on November 27, 2023 by Robert Barrington

L-theanine is a non-essential amino acid that is found in tea leaves in high concentrations. L-theanine passes across the blood brain barrier easily and in the brain it can have physiological effects. In particular, L-theanine is known to block the … Continue reading →

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L-Theanine: Health Effects

Posted on June 8, 2023 by Robert Barrington

Green tea has a number of health effects and these effects relate to the phytochemicals within the Camellia sinensis (tea) plant. One important constituent of green tea is the amino acid L-theanine. In animals, L-theanine is absorbed across the gut … Continue reading →

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Glycine and L-Theanine for Rest and Focus (The NMDA Receptor)

Posted on October 11, 2022 by Robert Barrington
Posted in Brain, L-glycine, L-theanine, Sleep, Stress | Comments Off on Glycine and L-Theanine for Rest and Focus (The NMDA Receptor)

L-Theanine, Melissa officianalis and Magnolia officinalis for mood

Posted on August 9, 2021 by Robert Barrington

Combination therapy is the use of multiple compounds to treat a particular condition. Combination therapy using plant compounds is particularly useful in the treatment of mood disorders because plant compounds tend to have different but overlapping effects on various aspects … Continue reading →

Posted in Anxiety, Depression, L-theanine, Lemon balm (Melissa officinalis), Magnolia, Mood | Comments Off on L-Theanine, Melissa officianalis and Magnolia officinalis for mood

L-Theanine, Melissa officinalis, Magnolia officinalis

Posted on September 13, 2020 by Robert Barrington
Posted in Anxiety, Depression, L-theanine, Lemon balm (Melissa officinalis), Magnolia, Mood | Comments Off on L-Theanine, Melissa officinalis, Magnolia officinalis

Tea As An Anti-Stress Drink

Posted on August 8, 2020 by Robert Barrington
Posted in Antioxidant, Cortisol, L-theanine, Stress, Tea | Comments Off on Tea As An Anti-Stress Drink