L-Theanine (Suntheanine®)


Part Used


Country of Origin


What is L-Theanine for?

L-theanine is an amino acid that can be found in both green and black tea and certain types of mushroom. It appears to alter levels of various neurotransmitters, producing a calming effect on the body as well as several other benefits.

Traditional Health Benefits of 


  • Anxiety & stress relief

  • Improves relaxation

  • Improves sleep quality

  • Supports weight loss

  • Increased mental focus

  • Increases cognitive performance

  • Boosts the immune system

  • Reduces blood pressure

  • Sinusitis relief


  • Artificial Coloring Free

  • Artificial Flavoring Free

  • GMO Free

  • Sugar Free

  • Soy Free

  • Yeast Free

  • Dairy Free

  • Corn Free
  • Gluten Free

  • Wheat Free

  • Nut Free

  • MSG Free

  • Egg Free

  • Fish Free

  • Peanut Free

  • Shellfish Free

  • Kosher

  • Organic


This information in our Ingredient Reference Guide is intended only as a general reference for further exploration and is not a replacement for professional health advice. This content does not provide dosage information, format recommendations, toxicity levels, or possible interactions with prescription drugs. Accordingly, this information should be used only under the direct supervision of a qualified health practitioner such as a naturopathic physician.

Products Featuring L-Theanine

More Ingredients to Discover

Our Herbal Reference Guide lets you enhance your relationship with herbs by

 giving you a comprehensive profile of each plant.