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L-Theanine
(image for) L-Theanine
(image for) L-Theanine
(image for) L-Theanine
(image for) L-Theanine
  • In Stock: 1000
  • Manufactured by: L-Theanine

L-Theanine

$2.89
L-Theanine (also known as Theanine, L-γ-glutamylethylamide and N5-ethyl-L-glutamine) is an analog of the amino acids of glutamate and glutamine. It was discovered as a constituent of green tea in 1949 and in 1950 was isolated from gyokuro leaves, which have high theanine content. L- Theanine...

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  • This product was added to our catalog on Monday 30 January, 2023.

L-Theanine (also known as Theanine, L-γ-glutamylethylamide and N5-ethyl-L-glutamine) is an analog of the amino acids of glutamate and glutamine. It was discovered as a constituent of green tea in 1949 and in 1950 was isolated from gyokuro leaves, which have high theanine content.

L- Theanine is used as a nootropic for its relaxing effects. It is advisable to take in combination with caffeine as research shows it can reduce potential negative effects, such as poor sleep quality, anxiety & increased blood pressure,  while possibly improving upon the positive aspects.


L-theanine increases levels of dopamine and serotonin in the brain which provides a feeling of calm and content.

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