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Doctor's Best, Suntheanine L-Theanine, promoting a relaxed state of mind without drowsiness.

Suntheanine L-theanine is best known for its unique ability to increase relaxation without causing drowsiness. .

Ingredients & Description

Suntheanine L-Theanine contains 100% Suntheanine, a patented pure form of the amino acid L-theanine produced in Japan from green tea leaves. This award-winning brand of theanine has been the subject of numerous safety studies and human clinical trials. One of green teas natural health-promoting compounds, L-theanine (y-glutamylethylamide) is synthesized in the roots of tea plants and transported to the leaves, comprising about 2% of the total dry weight of green tea leaves. It is the ingredient that is responsible for both the taste and the relaxing effects of green tea. Research shows that supplemental L-theanine crosses the blood-brain barrier within 30 minutes of intake and thus is able to exert its effects directly on the brain. Suntheanine may normalize the bodys stress response and condition the body to handle stressful situations better.


  • Helps ease stress and everyday nervous tension.
  • May enhance cognitive performance and increase attention to detail.
  • Suggested Adult Use: take 1 capsule daily, or as suggested by a health care practitioner

    Supplement Facts

    Serving Size:
      APS %DV
    Suntheanine L-Theanine 150 mg

    Other ingredients: Rice powder, vegetable capsule.

    Daily Value not established.

    **These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.

    SKU: DRB-00197
    UPC: 753950001978
    Distributed or manufactured from Doctor's Best. See more Doctor's Best products.
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    *Not intended to diagnose or treat diseases or ailments, and is not reviewed by the FDA.

    Uses & Indications.
    • Improving Cognitive Function
    • Easinng Daily Stress And Anxiety
    • Promoting Healthy Relaxation
    Ailments & Concerns.
    • Sleeplessness
    • Stress
    • Tension

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