100% Customer Satisfaction Guarantee

America's #1 Rated Catalog/Internet Merchant
Based on Customer Satisfaction

Jarrow Formulas, Inc.


Swanson $8.49
Retail $15.95 Save 47%
Add To Order
Add to Favorites

Save with Swanson


Recently Viewed Items

Look here for an easy way to
navigate to your previously
viewed products.

In Stock
100 mg 60 Caps
  • 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.

Jarrow Formulas, Inc. Theanine Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Theanine 5 5 7 8
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
Find this product to be very good. Very satisfied with it. October 17, 2013
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
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
Best Price! Excellent product, good value! Swanson's consistently offers the lowest prices compared to retail in my area. August 30, 2011
Does What it's Supposed to do Soothes with out sleepiness! March 13, 2008
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
1-8 of 8

7 Leaf Guarantee

Swanson’s 7-Leaf Guarantee

Earning your trust is our first
and only priority.

Top of Page