Thorne Research, Theanine, 90 Vegetarian Capsules




  • Dietary Supplement
  • Hypoallergenic

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  • Description

    • Dietary Supplement
    • Hypoallergenic

    L-theanine is a unique amino acid present almost exclusively in the tea plant (Camellia sinensis) and used safely in Japan for decades. L-theanine has demonstrated the potential to positively modify brain waves and key neurotransmitters involved in mood, focus, and memory. Consumption of L-theanine enhances brain alpha-wave activity, a sign of relaxation. The intensity of brain alpha-wave activity increases within 30-45 minutes of L-theanine supplementation, promoting relaxation, mental focus, and acuity.

    This effect is most pronounced in persons subjectively feeling the highest levels of distress. A small Japanese study of university students showed 200 mg oral L-theanine led to increased brain alpha-waves and a subjective sense of relaxation. Theanine administration caused a dose-dependent relaxed, yet alert, state of mind without sedation, beginning approximately 40 minutes after oral dosing. L-theanine can enhance the production of the neurotransmitters dopamine and serotonin and appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. Theanine helps establish balance in the neurotransmitter system, resulting in improvements in the mental/emotional and physical disturbances resulting from being overly stressed.

    Suggested Use

    Take 1 capsule one to three times daily or as recommended by your health-care practitioner.

    Other Ingredients

    Hypromellose (derived from cellulose) capsule, microcrystalline cellulose, leucine, silicon dioxide.


    Tamper Evident: Use only if bottle is sealed.

    If pregnant, consult your health-care practitioner before using this product.

    Store tightly sealed in a cool, dry place.

    Supplement Facts
    Serving Size: One Capsule
    Each Capsule Contains:Amount Per Serving% DV
    L-Theanine200 mg*
    *Daily Value (DV) not established
  • Product SKU 6598
    Brand Thorne Research

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Thorne Research, Theanine, 90 Vegetarian Capsules

Thorne Research, Theanine, 90 Vegetarian Capsules


  • Dietary Supplement
  • Hypoallergenic

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