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L-Theanine is a unique amino acid blend that helps promote relaxation.  Taken before bedtime, it may help you fall asleep more easily by “turning-off” repetitive thoughts.

Taken during the day, it can also help calm your mind and enable greater focus. L-Theanine can be helpful for PMS and for supporting a more positive mood.

Pure Encapsulation’s l-Theanine is made with hypoallergenic, vegan ingredients.

Available: 120 Capsules


  • Promotes relaxation
  • Helps moderate occasional stress
  • Eases nervous tension and irritability
  • PMS support
  • Promotes healthy mood
  • Helps relax the mind so is useful for promoting asleep


Relaxation Support: Preliminary clinical evidence shows an increase in alpha brain wave activity after l-theanine administration. Alpha waves are an indication of an alert/relaxed mental state.

Nervous System Support: l-Theanine moderates the effects of caffeine on the central nervous system. It has also been shown to support healthy neurotransmitter function.

Premenstrual Support: In a clinical test, l-theanine provided both mental and physical support for women, including moderation of occasional irritability and stress.



Pure Encapsulations’ l-Theanine is Suntheanine®, the brand which has been used in scientific studies.


Suggested Use: Take 1-6 capsules daily, in divided doses, between meals, or as directed by your healthcare provider.

Does Not Contain: Gluten or GMOs.

Caution: If pregnant or lactating, consult your physician before taking this product.
Higher doses may cause drowsiness for some people.

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