L-Theanine Extract Powder | Pure L-Enantiomer | CAS 3081-61-6

• Product Name: L-Theanine
• CAS Number: 3081-61-6
• Chemical Formula: C₇H₁₄N₂O₃
• Molecular Weight: 174.20 g/mol
• Synonyms: N-Ethyl-L-glutamine; L-Glutamic acid γ-(ethylamide)
• Appearance: White acicular (needle-like) crystalline powder; readily soluble in water.

Absorption & Metabolism: Upon oral ingestion, L-Theanine is rapidly absorbed through the intestinal brush border and enters systemic circulation. Peak concentrations in blood and the liver decline after 1 hour, whereas brain concentrations peak at approximately 5 hours. It is metabolized in the kidneys and excreted via urine, completely clearing the system within 24 hours.

Neurotransmitter Modulation: It actively crosses the blood-brain barrier, influencing the release and metabolism of critical neurotransmitters like dopamine and serotonin. This mechanism is believed to play a role in regulating mood and preventing certain neurotransmitter-mediated neurological disorders.

Alpha Brain Wave Promotion: Upregulates alpha (α) wave activity, a state correlated with relaxed alertness. It mitigates the stimulatory effects of caffeine, explaining why drinking tea induces a peaceful, calm state rather than nervous excitation.

• Premenstrual Syndrome (PMS) Relief: Clinical trials indicate the calming effects of L-Theanine significantly alleviate both the psychological (irritability, depression, restlessness) and physical (fatigue, sleep disturbance, lower abdominal pain) symptoms associated with PMS in women aged 25-45.
• Cognitive & Nootropic Stacks: Proven in animal models to improve memory and learning capacity. In human formulations, it is the gold standard for pairing with Caffeine (typically a 2:1 ratio) to blunt "jitters" while amplifying cognitive clarity and sustained attention.
• Stress Management & Functional Beverages: Ideal for daytime relaxation products and "calm focus" RTD beverages due to its high aqueous solubility, thermal stability, and pleasant, slightly sweet taste profile.