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

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

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

In Stock
  • Expiration Date: January 2021
  • Shipping Weight:
    0.12 lbs
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  • Product Code: SNS-01646
  • UPC Code: 021078016465
  • Package Quantity: 60 Capsules
  • Dimensions:
    2 x 2 x 3.5 in, 0.1 lbs
    Switch to Metric units

Product Rank:

#12 in L Theanine >
#212 in Amino Acids >
Frequently Purchased Together
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

My calming pill

Posted by iHerb Customer on February 2 2018 | Verified Purchase

I order this every 2 months, i tried other brands but i find this most effective in calming my anxiety and gives me the zen i need be it to mingle in social events or stage presentations. Best part for me, it’s antioxidants so it’s not harmful to my health contrary to xanax etc.

Thanks for your feedback!

Wonderful for sleep and anxiety

Posted by iHerb Customer on January 12 2018 | Verified Purchase

I’ve been using this product for over a year and it’s been so great. Iv’e been able to cease my prescribed anxiety medication and I have t experienced any side effects. I take it at night with magnesium.

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anxious and insomnia

Posted by iHerb Customer on November 3 2017 | Verified Purchase

this is great. i dont feel as jittery as i do and i actually get sleepy!

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Great for anxiety and depression!

Posted by iHerb Customer on July 25 2017 | Verified Purchase

I've been taking 2 of these a night for almost a year and swear by them for the relief of anxiety and depression. They don't make me feel drowsy or hyperactive, they just gently make me feel better. It can take a week or two for them to take full effect. I haven't noticed any side effects and don't see myself ever stopping them unless I have to. I take them along with 2 x L-Tryptophan, also from source naturals.

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Great product

Posted by iHerb Customer on December 25 2016 | Verified Purchase


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