# Theanine

Amino acid from tea that supports a healthy stress response, relaxation, focus, and memory

Theanine, found almost exclusively in the tea plant, helps modify brain waves by increasing alpha-wave production. It also enhances brain neurotransmitters involved in stress management.

L-theanine is a unique amino acid that is found almost exclusively in the tea plant (Camellia sinensis) and which has been used safely in Japan for decades. L-theanine has been shown to positively modify brain waves and the key neurotransmitters involved in mood, focus, and memory. L-theanine enhances the production of the neurotransmitters dopamine and serotonin, and also appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. L-theanine also enhances brain alpha-wave activity, a marker of relaxation.\* This effect has been observed to be most pronounced in individuals subjectively feeling the highest levels of stress.

A Japanese study of university students found that 200 mg of L-theanine led to increased brain alpha-waves and a subjective sense of relaxation. In the same study, L-theanine administration also caused a dose-dependent relaxed, yet alert, state of mind without sedation, beginning approximately 40 minutes after ingestion.

L-theanine can enhance the production of the neurotransmitters dopamine and serotonin, and it appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. L-theanine helps establish balance in the neurotransmitter system, resulting in improvements in the mental/emotional and physical disturbances resulting from being overly stressed.

Take 1 capsule one to three times daily or as recommended by your health professional.

## Details

- **Price:** 68.0 USD
- **Vendor:** THORNE RESEARCH
- **Type:** Vitamins & Supplements
- **Tags:** 90 CP, 90 Day Supply, Above $50, DR LINE SUPPLEMENT, flash, Form|CP, SyncedWithC4, THORNE RESEARCH

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 68.00 USD | In stock |

## Images

- Theanine - Thorne
- Theanine - Thorne
- Theanine - Thorne

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> Source: [Village Green Apothecary](https://myvillagegreen.com/products/thorne-theanine-90-capsules)
> Updated: 2026-06-02