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L-Theanine, 60 Veg Caps

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Temporarily promotes relaxation.


  • Stress

Feature Ingredients 

  • L-Theanine is an amino acid found in tea that can increase alpha-brain waves, decrease excess cortisol and promote relaxation.
  • Offers Suntheanine®, a clinically researched form of l-Theanine
  • Convenient once-daily capsule form

l-Theanine is a unique amino acid originally found in tea.

  • l-Theanine has also been discovered as a biologically active compound responsible for promoting relaxation.
  • It acts by decreasing cortisol levels during stress and regulating neurotransmitters activity in the brain. In a preliminary non-clinical study, an l-Theanine solution enhanced alpha wave production in the occipital and parietal regions of the brains of volunteers.
  • These observed patterns are considered to be an index of relaxation. Furthermore, it did so rapidly and without causing drowsiness.
  • In two additional studies, alpha waves were also shown to be detectable soon after l-Theanine administration. Furthermore, l-Theanine has been reported to moderate the effects of caffeine on the central nervous system. Pure Encapsulations l-Theanine is Suntheanine®, the brand which has been used in scientific studies.
    Suntheanine®is a registered trademark of Taiyo International, Inc.

Serving Size: 1 Vegetarian Capsule

Servings per Container: 60

Medicinal Ingredients

Each Capsule Contains:


200 mg

Non-Medicinal Ingredients

Hydroxy propyl methylcellulose, purified water, hypo-allergenic plant cellulose.


Contains No Added: artificial colours, preservatives, dairy, wheat, gluten, egg, peanuts, coatings and shellacs, GMOs, magnesium stearate or animal products. Suitable for Vegetarians and Vegans.

Recommended Use 

Adults 19+: Take 1 capsule daily, or as recommended by your healthcare provider.

Pure Encapsulations Advantage 

At Pure Encapsulations, we manufacture hypoallergenic, research-based dietary supplements that are designed to deliver predictable and desired results. We are committed to sourcing pure, premium ingredients and working with experienced healthcare professionals to create safe and effective dietary supplements to help you achieve optimal health. Based on your healthcare practitioner’s medical guidance, we help provide you with the tools and dietary supplements you need to achieve your health and wellness goals. To purchase our products, you must obtain a fulfillment code from your practitioner.


Do not use if you are hypersensitive or allergic to any of the ingredients.


Consult a health care practitioner prior to use if you are taking any medications, supplements or if you have any pre-existing condition or symptoms including but not limited to diabetes, gallstones, stomach ulcers or excess stomach acid. Artichoke and curcumin should be used with caution in individuals with bile duct obstruction. Discontinue 2 weeks prior to any scheduled surgery. 

Side Effect Risks 

Discontinue use and consult a healthcare practitioner if symptoms persist, worsen or you develop any reactions which may include allergy or intolerance, pregnant or breastfeeding. Keep out of reach of children. Sealed for your protection. Do not use if seal is broken. Store in a cool, dry place.


The information and product descriptions that appear on this website are for information and educational purposes only and are not intended to provide or replace medical advice to individuals from qualified health care professionals. Consult your physician if you have any health concerns, and before initiating any new dietary, exercise, supplements or other lifestyle changes.