L-Theanine Capsules

What is L-Theanine?

First discovered as a constituent of green tea leaves  ( Camellia sinensis)  in 1949, L-Theanine is an amino acid  analogue  of the proteinogenic amino acids   L-glutamate  and  L-glutamine. L-Theanine is considered a nondietary amino acid, not unlike  L-Ornithine  or L-Citrulline. L-Theanine is primarily known for its ability to promote relaxation without causing sleep and is often paired with Caffeine. It is thought that L-Theanine helps balance the negative effects of Caffeine that some people experience. Together, L-theanine and Caffeine are considered one of the most commonly used and popular nootropic stack options that may promote faster reaction time, numeric working memory reaction time and improved sentence verification accuracy.

L-Theanine Benefits and Uses

L-Theanine benefits and uses may include:

• Promotes relaxation
• Support healthy sleep cycles
• Support healthy stress levels
• Promote feelings of well-being
• Support cognitive function and focus
• Synergistic effects with Caffeine

L-Theanine Studies

L-Theanine may have positive mood-boosting effects as scientists have discovered that it  changes levels of amino acids affecting serotonin and other neurotransmitters in the brain. L-Theanine may also help  suppress glucocorticoids. Glucocorticoids are stress hormones that can have a negative effect on mood, memory and learning. L-Theanine may act as a  glutamate antagonist and, in turn, balance  the harmful effects of high glucocorticoid levels. This also suggests that L-Theanine may be neuroprotective as well. 

Additionally, L-Theanine may promote better sleep. One Japanese human study where participants were given a daily L-Theanine supplement concluded that L-Theanine did not induce sleep or make them sleep longer - but rather that it improved sleep quality. Documented participant responses claimed that exhaustion recovery and feelings of being refreshed were enhanced by L-Theanine.

L-Theanine supplementation has been studied for its potential ability to reduce mental and physical stress, improve cognition,  and boost mood and cognitive performance. It is also reported to promote alpha wave production in the brain. One study conducted by Unilever was able to confirm that even small amounts of L-Theanine were able to promote alpha wave production as indicated on an EEG (Electroencephalography). 

L-Theanine Dosage

As a dietary supplement, take one 200mg L-Theanine capsule daily.

Attention: This product is not intended to diagnose, treat, cure, or prevent any disease. It has not been approved, nor have these statements been evaluated, by the FDA.