L-Theanine
Green tea's calming amino acid eases the fight-or-flight drive and the brain-to-adrenal alarm, lifts GABA's hush and restores glutamate to its balance.
What the evidence shows
Every line below is carried on the blend page that makes the claim. Follow it to the pathway and its sources.
The amino acid of green tea brings alpha waves, the brain rhythm of relaxed alertness, and trims cortisol's response to strain without sleepiness.
The calm of green tea, theanine rebalances glutamate's excitatory traffic, softens cortisol's reactivity and settles the adrenaline of a stressed nerve.
The amino acid that sets tea apart from coffee lifts GABA and alpha brain waves — the mind unclenches toward sleep without being drugged into it.
The amino acid of the green tea leaf, theanine settles the stress line from brain to adrenal gland, bringing alert calm in place of the cortisol surge.
In randomized controlled trials L-theanine eased stress-related symptoms, improved sleep quality and lowered anxiety.
Where it appears
7 blend pages carry this ingredient. Open it and you will find this ingredient in the list.
- Autonomous (Executive Command)
- Ecstatic (Nervous System Stand-Down)
- Endurance Eternal (Pigment Preservation)
- Event Horizon (Post-Ethanol Restoration)
- Hypnotic Sleep (Slow-Wave Architecture)
- Niagra (Desire, Arousal & Climax)
- Rewire (Total Brain Reset)