Cognition, memory, and focus is the main area connected here, and any felt benefit should be read together with the human evidence base.
Some human supplement-context evidence is present and directly informs the score.
Representative tier calculated from paper evidence that passed the collection audit.
The representative ingredient tier is calculated from these target-level evidence groups.
Potential benefit studied in Cognition and focus.
This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.
These findings come from stress response, cortisol, anxiety, or sleep outcomes. They may mix felt benefits with physiological markers.
This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.
Research has examined possible effects in the Blood pressure and vascular health area. This does not predict an individual result.
This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.
This range includes studies in specific patient groups. It is not a general dose or recommendation.
Findings from studies of this ingredient alone are separated from findings involving another supplement or medication.
Positive combination findings are separated by how the study compared the groups. This is not a recommendation to combine them.
The combination had a positive result, but the contribution of each ingredient could not be separated.
Paper IDs and full lists are private. Only study types and summaries are shown.
[Abstract]: L-Theanine is an amino acid contained in green tea leaves which is known to block the binding of L-glutamic acid to glutamate receptors in the brain. Because the characteristics of L-Theanine suggest that it may influence psychological and physiolo
[Abstract]: L-Theanine is an amino acid found naturally in tea. Despite the common consumption of L-theanine, predominantly in combination with caffeine in the form of tea, only one study to date has examined the cognitive effects of this substance alone, and
[Abstract]: Tea is the most widely consumed beverage in the world after water. Tea is known to be a rich source of flavonoid antioxidants. However tea also contains a unique amino acid, L-theanine that may modulate aspects of brain function in humans. Evidence
Substantial increase in GABA receptor and GluN1 expression is attributed to the potential neuromodulatory properties of GABA/l-theanine combination, which seems to affect sleep behaviour.
[Abstract]: L-Theanine (delta-glutamylethylamide) is one of the predominant amino acids ordinarily found in green tea, and historically has been used as a relaxing agent. The current study examined the acute effects of L-theanine in comparison with a standard
[Abstract]: This randomized, placebo-controlled, crossover, and double-blind trial aimed to examine the possible effects of four weeks L-theanine administration on stress-related symptoms and cognitive functions in healthy adults. Participants were 30 individu