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

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

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

In Stock
  • Expiration Date: 12/2019
  • Shipping Weight:
    0.18 lbs
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  • Product Code: SNS-01499
  • UPC Code: 021078014997
  • Package Quantity: 60 Tablets
  • Dimensions:
    1.8 x 1.8 x 3.3 in, 0.15 lbs
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Combo Offer!
Save $10.00 when you purchase these items today for only $68.38
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

Works extremely well. If you need a 100mg dose, buy a tablet splitter. Or split by hand, it's easy!

Posted by Sickness-ELIMINATOR on Sep 12, 2017 | Verified Purchase

Dosing tip: if you take 100mg of caffeine, take 100mg of theanine with it. if you take 200mg of caffeine, take 200mg of theanine with it. And so on. That removes most side-effects of caffeine. . . Click YES if I was of any benefit for you.

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No effect

Posted by iHerb Customer on Dec 20, 2016 | Verified Purchase

Theanine is often lauded for its relaxing effect, but I did not perceive any such effect even in the slightest bit when taking this product.

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

Posted by iHerb Customer on Feb 28, 2015 | Verified Purchase

Super happy good product

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veg friendly & cheap

Posted by iHerb Customer on Oct 22, 2013 | Verified Purchase

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 iHerb Customer on Sep 10, 2013 | Verified Purchase

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

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