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L-Theanine is an amino acid found in green and black tea.  Since ancient times, drinking tea has been associated with feelings of calmness and relaxation.  It’s thought that L-Theanine, which can cross the blood-brain barrier may be responsible for this.  Studies show that L-Theanine promotes an alert state of relaxation without drowsiness as indicated by an increase of alpha brain waves (relaxed, alert state) and a decrease in beta brain waves (awake, excited state).  Supplementing with L-Theanine may:


  • Promote Relaxation*
  • Stress Management*
  • Jitter Free Focus*


All Star Vitamin’s L-Theanine is a vegetarian capsule which is free of Gluten, Gelatin, Artificial Colors, Flavors, and is Non-GMO.  Each capsule contains the amount of Theanine typically found in 10 cups of tea.  All our products are manufactured in the United States in a cGMP registered and inspected facility.


Directions: For adults, take 2 capsules daily, preferably with a meal.


*This statement has not been evaluated by the Food and Drug Administration.  This product is not intended to diagnose, treat, cure, or prevent any disease.

L-Theanine 100mg, 70 Vegetarian Capsules

SKU: 1800
  • We guarantee your satisfaction on every product we sell, and will refund your purchase price within 90 days of the date of purchase.  Please email us using the contact form in the about us section of our website.

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