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Source Naturals

Serene Science L-Theanine

Gluten Free

Item: SN387

In Stock

Swanson $16.09
Retail $31.50
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200 mg 60 Caps

  • 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.

Lee Swanson, President

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If you are dissatisfied for any reason, we'll give you a full refund and pay return shipping. Lee Swanson, President of Swanson Health Products

Product Description:

Serene Science L-Theanine

  • 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.

Product Label:

Serene Science L-Theanine

Supplement Facts

Serving Size 1 Capsule

  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.

Terms and Ingredient Definitions

Serene Science L-Theanine

Swanson $16.09
Add To Order

Source Naturals Serene Science L-Theanine Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Serene Science L-Theanine 4.5 5 7 8
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. July 25, 2013
great product I have tried many L-Theanine-and this is the best one I have found. July 13, 2013
Peaceful Sleep I heard this product can help you sleep better and fall asleep faster. Seems to be working for me! April 22, 2013
L-theanine my mom recommended that I take this product to help me sleep, and it really does work. April 11, 2013
Really helps I tr5ied these for about a week and I do see results that was not expected. There are so many products that makes claims that are never realized. With these I am more relaxed. January 24, 2013
As a women, with lots of things on my plate. It really helps me keep my self together, so I can be there for others. November 6, 2012
love it Dr Oz recommented this product it is great and the prices here are fantastic. Thanks for your great quality of product. July 19, 2012
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