Swanson L-Teanina Suntheanine 100 mg / 60 capsules


Food supplement


What is Suntheanine®

It is estimated that almost 65 percent of the adult population experiences some form of stress, and these numbers continue to rise. Since ancient times, it has been said that drinking green tea causes relaxation. A pioneer in the science of green tea - Taiyo stated that the relaxation effect is related to the presence of the amino acid L-Theanine, which occurs almost exclusively in tea.

Clinical studies show that 50 mg - 200 mg of Suntheanine® naturally stimulate brain activity known as alpha waves, which are associated with a pleasant but still alert state. Suntheanine® is a trade name patented by Taiyo and contains the pure form of L-Theanine. Suntheanine® is not a green tea extract, but is produced through a patented fermentation process that mimics the natural processes in green tea leaves, resulting in 100% pure L-isomer-theanine.

How does Suntheanine® work?

Clinical studies have shown that Suntheanine® has a relaxing effect without drowsiness. This showed an increase in alpha waves and a decrease in beta waves in the brain.

The brain emits weak electrical impulses that can be measured on the surface of the head, and are classified based on their frequency:

  • Brain waves, Frequency (Hz), Mental influence
  • Delta, 0.5-3.0, Sound sleeper
  • Theta, 4.0-7.0, Snooze
  • Alpha, 8.0-13.0, Relaxation/wakefulness
  • Beta, > 14.0, Awakening

Additional clinical studies have shown that Suntheanine® may be useful in improving sleep quality, reducing symptoms of premenstrual syndrome (PMS), improving academic performance, increasing mental acuity, promoting concentration, reducing the negative side effects of caffeine and supporting the immune system.

Suntheanine® L-theanine  is a safe supplement. Its values ​​were appreciated by numerous juries. The product was awarded the "Food Ingredient Research Award" in 1998 and the "Best New Product" in 2000. Suntheanine® is protected by over 40 US and international patents for its various physiological properties and L-isomer manufacturing process


Ingredients in a daily dose:            1 capsule            2 capsules

Suntheanine®                                     100 mg             200 mg


Ingredients:  L-theanine, brown rice flour, capsule shell: hydroxypropylmethylcellulose, anti-caking agent: magnesium salts of fatty acids.

Suntheanine® is a registered trademark of Taiyo International, Inc.

How to use:  one capsule 1-2 times a day before meals. Do not exceed recommended servings for consumption during the day. The product cannot be used as a substitute for a properly varied diet.

Store at room temperature, out of the reach of small children. The product is not recommended for pregnant and breastfeeding women.

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