What is it?
L-Theanine is a unique non-protein amino acid predominantly found in tea leaves, particularly from the Camellia sinensis plant. It is renowned for its various health benefits, including its role in enhancing relaxation, improving concentration, and modulating immune responses.
What does science research say?
l-Theanine: An astounding sui generis integrant in tea.
Summary: L-theanine, found in tea, has potential health benefits, including anti-stress, neuroprotective effects, and modulation of anti-neoplastic agents.
Link: ScienceDirect
L-Theanine and Immunity: A Review
Summary: L-theanine improves immunity, reduces immunosuppression, and can be used as an immunomodulator in animal production and inflammation.
Link: MDPI
l-Theanine Activates the Browning of White Adipose Tissue Through the AMPK/ฮฑ-Ketoglutarate/Prdm16 Axis and Ameliorates Diet-Induced Obesity in Mice
Summary: L-theanine activates browning of white adipose tissue and reduces diet-induced obesity in mice by enhancing adaptive thermogenesis and increasing energy expenditure.
l-Theanine reduces psychological and physiological stress responses
Summary: L-Theanine intake reduces psychological and physiological stress responses, likely due to inhibition of cortical neuron excitation during acute stress tasks.
Link: ScienceDirect
L-theanine: an astounding sui generis amino acid in poultry nutrition
Summary: L-theanine, found in green tea, has potential benefits for poultry nutrition, including antioxidant, growth promotion, immune boost, and anti-stress effects.
Link: ScienceDirect
L-theanine relieves positive, activation, and anxiety symptoms in patients with schizophrenia and schizoaffective disorder: an 8-week, randomized, double-blind, placebo-controlled, 2-center study.
Summary: L-theanine augmentation of antipsychotic therapy can improve positive, activation, and anxiety symptoms in patients with schizophrenia and schizoaffective disorder.
l-Theanine regulates glucose, lipid, and protein metabolism via insulin and AMP-activated protein kinase signaling pathways.
Summary: L-theanine, found in tea, can regulate glucose, lipid, and protein metabolism in rats through insulin and AMPK signaling pathways.
Psychotropic effects of L-theanine and its clinical properties: from the management of anxiety and stress to a potential use in schizophrenia.
Summary: L-theanine, found in green tea, shows promising therapeutic potential in managing anxiety disorders and psychological stress, with potential applications in schizophrenia.
Link: ScienceDirect
L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial.
Summary: L-theanine did not show significant efficacy in reducing anxiety symptoms in generalized anxiety disorder, but may improve sleep satisfaction in those with non-clinical insomnia symptoms.
Link: ScienceDirect
An overview of biological production of L-theanine.
Summary: Bacterial enzymes show potential in producing L-theanine, a valuable and beneficial amino acid for human health and food applications.
Link: ScienceDirect
What do user think?
*Based on large scale analysis of publicly available user experiences, the higher it is the better overall opinions of users on efficiency, safety, availability, etc.
Category: Effective
Highly praised for reducing anxiety and jitteriness (especially with caffeine) while enhancing focus and relaxation.
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