PURE ORIGINAL INGREDIENTS L-Theanine (8 oz) Amino Acid ...

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L-theanine HCL is an amino acid found in tea leaves, such as black and green teas. It can also be produced synthetically or can be used as an ingredient in a L-theanine supplement. 

L-theanine may help support a number of health benefits, including stress levels and cognitive function (study) and immunity for specific populations (study).* 

L-theanine and sleep

L-theanine might also help to support sleep quality and duration when mixed with GABA (study). Research also found that L-theanine could help support heart health and positively influence the Tension-Anxiety score for specific people (study).* You may also want to read about matcha green tea. You may also want to read about hibiscus.

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L-theanine and stress-relief

Individuals with high levels of anxiety often have high levels of tension. In order to measure the level of stress in a person, a tension-anxiety score can be calculated. This score is obtained by subtracting the anxiety score from the tension score. The higher the tension-anxiety score, the more tension a person is experiencing.*

When it comes to stress relief, L-theanine works by reducing the body's production of cortisol, the stress hormone. In one study, participants who took L-theanine HCL per day experienced lower levels of stress than those who did not take the supplement (study).* You may also want to read about Bacopa Monnieri and Cissus Quadrangularis.

L-theanine and cognition

Certain types of adults who used L-theanine during research showed improvements in attention span (study).* This is one the reasons why sometimes L-theanine is referred as nootropic. A nootropic is a type of supplement that is thought to support cognitive function.*

In addition to its stress-relieving and cognitive-enhancing effects, L-theanine may also offer other health benefits. For example, L-theanine HCL has been shown to help support immunity by increasing the production of antibodies and white blood cells of athletes after strenuous physical exercise (study). 

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