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HomeIngredientsL-Theanine
Amino Acid

L-Theanine

γ-Glutamylethylamide

The calm-focus amino acid found naturally in matcha green tea.

L-TheanineGABA precursor activityGlutamate modulation

Overview

L-Theanine is a naturally occurring amino acid found almost exclusively in green tea leaves (Camellia sinensis). It is responsible for the calming, focused energy state that distinguishes matcha from coffee. Unlike caffeine alone, L-theanine is traditionally associated with calm-focus tea rituals and has been studied for relaxed alertness in some research contexts.

Properties & Research

Calm Ritual Appeal

L-Theanine is naturally found in matcha and is traditionally associated with calm, mindful tea rituals.

Caffeine Synergy

When combined with caffeine (as naturally occurs in matcha), L-theanine sharpens focus while reducing caffeine jitter and anxiety.

Stress Reduction

Clinical evidence for reduced salivary cortisol and perceived stress in multiple double-blind trials.

Working Memory

Combined L-theanine + caffeine shows improved working memory and attention in several well-designed RCTs.

Research Summary

One of the most well-studied functional compounds. Over 30 human trials across cognitive performance, anxiety, and sleep. Combination with caffeine is strongly supported.

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.