Your Cart is Empty
But it doesn't have to be.
Continue Shopping.
Added to Cart
Cart Total:
Customers Also Bought:

Source Naturals, L-Theanine, 200 mg, 60 Capsules

Our Price:
You Save:
$15.41 (46)
  • Volume Discount
  • Buy 2+
    Save 5%
Earn 10% Loyalty Credit ?

This product is already in your Wish List.

View Wish List

This product is now in your Wish List.

Sorry, this product is no longer in stock.

In Stock
  • Expiration Date: Oct 2019
  • Shipping Weight: 0.14 lbs (0.06 kg)
  • Product Code: SNS-01646
  • UPC Code: 021078016465
  • Package Quantity: 60 Capsules
  • Dimensions: 2 x 2 x 3.5 in, 0.1 lbs (0.05 kg)
Bundle Offer
Save $4.00 when you purchase these items today for only $25.04
Total: $29.04
Combo Discount: - $4.00
Together: $25.04

Sorry, this product is no longer in stock.

Product Overview


  • Helps Reduce Anxiety
  • Dietary Supplement

L-Theanine is a 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. Animal studies have shown that L-theanine crosses the blood brain barrier, increases dopamine and GABA levels in the brain 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.

Suggested Use

1 capsule 1 to 2 times daily with a glass of water.

Other Ingredients

Microcrystalline cellulose, gelatin (capsule), colloidal silicon dioxide and magnesium stearate.

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


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 MAOI's or SSRI's, 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.

Supplement Facts
Serving Size: 1 Capsule
  Amount Per Serving %DV
L-Theanine 200 mg
†Daily Value not established.
iHerb Customer Reviews

Great Stuff!!!

Posted by 5008968714057277687 on Aug 19, 2016

Awesome stuff! Really keeps anxiety under control. I've tried a couple of different types but this works best for me. Highly recommend it for anyone wishing to slow down those racing thoughts!!

Verified Purchase

Was this review helpful to you?

not bad

Posted by 4802581955567946307 on Feb 08, 2016

Clam you in some what

Verified Purchase

Was this review helpful to you?

Made me sleepy!

Posted by 5616603806499151341 on Jan 03, 2016

Effect lasted for approx. 2 hours from intake of one capsule.

Verified Purchase

Was this review helpful to you?

very good

Posted by Reviewer3346025 on Aug 21, 2014

not too sure, but I think it works pretty well

Verified Purchase

Was this review helpful to you?


Posted by 5498205521158147148 on Apr 18, 2014

Another fantastic one combine with GABA and DLPA and b6 vitamin and you have an effective sedative/relaxant.

Verified Purchase

Was this review helpful to you?