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speak with a customer support representative

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Source Naturals- Serene Science L-Theanine

discounted price-
$24.85
item | SN387
Serene Science L-Theanine
Gluten-FreeGLUTEN FREE

Source Naturals- Serene Science L-Theanine

discounted price-
$24.85
item | SN387
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Product Description
  • L-Theanine from Source Naturals
  • Unique amino acid derived from the green tea plant
  • Supports natural relaxation

L-Theanine from Source Naturals is a dietary supplement featuring this unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Research has shown that L-theanine crosses the blood brain barrier, supports healthy neurotransmitter levels and inhibits the stimulatory properties of caffeine. Human studies have shown that taking L-theanine results in the emission of brain waves associated with a state of relaxation.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Product Description
  • L-Theanine from Source Naturals
  • Unique amino acid derived from the green tea plant
  • Supports natural relaxation

L-Theanine from Source Naturals is a dietary supplement featuring this unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Research has shown that L-theanine crosses the blood brain barrier, supports healthy neurotransmitter levels and inhibits the stimulatory properties of caffeine. Human studies have shown that taking L-theanine results in the emission of brain waves associated with a state of relaxation.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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Supplement Facts

Serving Size 1 Capsule

Supplement Facts
Amount Per Serving % Daily Value
L-Theanine
200 mg

†Daily Value not established.

Other ingredients: microcrystalline cellulose, gelatin (capsule), silica, and magnesium stearate.

Suggested Use: 1 capsule 1 to 2 times daily.

WARNING: Not for use by infants, children, or women who are pregnant, may become pregnant, or breastfeeding. If you are taking any antidepressant drugs, such as MAOIs or SSRIs, consult your health care professional before taking this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

  • HYPOALLERGENIC: contains no yeast, dairy, egg, gluten, corn, soy or wheat.
  • Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Ratings and Reviews

Disclaimer: Product reviews are provided for informational purposes only. The information or opinions expressed therein are solely those of the contributors and do not necessarily represent those of Swanson Health Products and its employees.  
4.4out of 5 stars
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Filter 11 Ratings
5 star
54.5%
4 star
36.4%
3 star
0.0%
2 star
9.1%
1 star
0.0%
Quality 4.5 / 5
Effectiveness 4.3 / 5
Value 4.2 / 5
Satisfaction 4.2 / 5
Convenience 4.8 / 5
Review Stars
Nadir K.
Oct 19, 2020

Good products from a good company, but...

I bought this version of L-theanine for my wife. She had run out of the same product, which she liked very much. Unfortunately, I made a mistake: this version contains gelatin. She said the tablets she had been taking did not contain gelatin. My fault; i should have checked more carefully. An expensive lesson.
Quality 4 / 5
Value 3 / 5
Effectiveness 4 / 5
Convenience 5 / 5
Satisfaction 1 / 5
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Patricia A.
Apr 11, 2020

Sleep aid

This helps me get a good night's sleep.
Quality 5 / 5
Value 4 / 5
Effectiveness 5 / 5
Convenience 5 / 5
Satisfaction 5 / 5
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bmwtex
Jul 25, 2013

bmwtex

My wife takes this product every evening to help her relax and sleep. it works very well for her and it was recommended to her by our family doctor. we have recommended it to several friends.
Quality 5 / 5
Value 5 / 5
Effectiveness 4 / 5
Convenience 5 / 5
Satisfaction 5 / 5
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Serene Science L-Theanine-
discounted price-
$24.85
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