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5.0 out of 5 (8)


Item: JR045

  • Promotes relaxation without drowsiness

  • Favorably affects dopamine and serotonin levels

  • Identical to the theanine found in green tea

100 mg 60 Caps

Retail $15.95
In Stock
  • Promotes relaxation without drowsiness

  • Favorably affects dopamine and serotonin levels

  • Identical to the theanine found in green tea
Theanine 100 is a unique amino acid found almost exclusively in green tea that exerts beneficial effects on brain metabolism. It induces relaxation without causing drowsiness, as measured by increased generation of alpha-waves. Theanine may improve learning ability and sensations of pleasure by affecting dopamine and serotonin neurotransmitters in the brain. Theanine 100 is made enzymatically from amino acids and is identical to the theanine found in green tea.

Terms and Ingredient Definitions

Supplement Facts

Serving Size 1 Capsule

Servings Per Container 60

  Amount Per Serving % Daily Value
L-Theanine 100 mg *

* Daily Value not established.

Other Ingredients: Cellulose, magnesium stearate (vegetable source) and silicon dioxide. Capsule consists of gelatin.

USAGE: Take 1 capsule 1 or 2 times per day with water or juice on an empty stomach or as directed by your qualified healthcare professional.

NOTE: If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.

Keep out of the reach of children.

  • No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.

Suntheanine® is a registered trademark of Taiyo International, Inc.

Shipping Weight

.10 lbs

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Rated 5 out of 5 by 8 reviewers.
Rated 5 out of 5 by very soothing for me. When I first started taking this I immediately felt at ease. I take this in the evening and I find it easy to get a good nights' rest. April 3, 2014
Rated 5 out of 5 by Find this product to be very good. Very satisfied with it. October 17, 2013
Rated 5 out of 5 by Great for relaxation! My acupuncturist recommended this product. I was skeptical about trying it, but once I did, I was hooked! I find that it takes the edge off of my emotions, but with no tired or sluggish feeling. April 11, 2013
Rated 5 out of 5 by Straightforward stress relief I work in a very high pressure environment, and when I take L Theanine, it is guarantee that the pressure will not overtake me. I trust this product because: • It is from Jarrow • It calms my emotions • the capsules and dosage are convenient January 1, 2013
Rated 5 out of 5 by Best Price! Excellent product, good value! Swanson's consistently offers the lowest prices compared to retail in my area. August 30, 2011
Rated 5 out of 5 by Does What it's Supposed to do Soothes with out sleepiness! March 13, 2008
Rated 5 out of 5 by L-Theanine I am thankful that my Mom (who is 86 years) has been able to take this product. She is thankful that her life is more serene. I only wish it was in powder form as she has trouble swallowing capsules. December 28, 2007
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Lee Swanson, Founder of Swanson Health Products

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