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

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In Stock
  • Expiration Date: Dec 2019
  • Shipping Weight: 0.18 lbs (0.08 kg)
  • Product Code: SNS-01499
  • UPC Code: 021078014997
  • Package Quantity: 60 Tablets
  • Dimensions: 1.8 x 1.8 x 3.3 in, 0.15 lbs (0.07 kg)
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Product Overview


  • Dietary Supplement
  • Helps Reduce Anxiety

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 tablet 1 to 2 times daily

Other Ingredients

Dibasic calcium phosphate, microcrystalline cellulose, magnesium stearate, stearic acid, colloidal silicon dioxide, modified cellulose gum, and hydroxypropyl cellulose

Suitable for vegetarians and 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 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.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Calcium 76 mg 8%
L-Theanine 200 mg
†Daily Value not established
iHerb Customer Reviews

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

Posted by 5274580851052583077 on Feb 28, 2015

Super happy good product

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veg friendly & cheap

Posted by 4749031583998150554 on Oct 22, 2013

what more could you ask for? this is the best price i've ever found for these. period. quick shipping too!

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Posted by 5742634568594218331 on Sep 10, 2013

Ses to be working very well, son is feeling a lot calmer and focused.

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does not work !!

Posted by Reviewer2379884 on Feb 02, 2013

I does not work well than expected...I cannot feel much difference after taking it...acutally, not help for sleep.

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Posted by Reviewer1968545 on Jan 06, 2012

Was not sure about this herb until my doctor reccomended trying it with another plus my klonpin and within two weeks my anxiety was so much more managable. I have severe PTSD and was taking klonopin 4x a day, now i'm taking it twice with the L-Theanine. This product is wonderful and i'm deff. going to keep using it i love it.

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