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Jarrow Formulas, Theanine 100, 100 mg, 60 Capsules

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In Stock
  • Expiration Date: Aug 2018
  • Shipping Weight: 0.17 lbs (0.08 kg)
  • Product Code: JRW-15050
  • UPC Code: 790011150503
  • Package Quantity: 60 Capsules
  • Dimensions: 3.9 x 2.1 x 2.1 in, 0.1 lbs (0.05 kg)
Product Overview


  • Neurologically-Active Amino Acid
  • Promotes Relaxation
  • Supports Learning Ability
  • Suntheanine
  • Dietary Supplement

Theanine is a unique amino acid found almost exclusively in green tea that exerts beneficial effects on brain metabolism. Theanine 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. Also, Theanine exerts protective effects on the brain by mitigating glutamate toxicity.

Jarrow Formulas Theanine is made enzymatically from amino acids and is identical to the theanine found in green tea.

Suggested Use

Take 1 capsule 1 or 2 times per day with water or juice on an empty stomach or as directed by your qualified healthcare professional.

Other Ingredients

Cellulose, magnesium stearate (vegetable source) and silicon dioxide. Capsule consists of gelatin.

No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.


Note: If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.

Keep out of the reach of children.

Supplement Facts
Serving Size: 1 Capsule
Serving Per Container: 60
  Amount Per Serving % DV
L-theanine 100 mg *
* Daily Value not established.
iHerb Customer Reviews

Great product

Posted by 5649993872780156410 on Dec 23, 2016

I took at evening one or two capsules and I slept well.

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Effective Relaxant

Posted by 5008134649212631097 on Oct 05, 2016

This is an effective product, particularly on an empty stomach. The effect has diminished in intensity for me over time. I take it when I am feeling anxious, or when I've had slightly too much caffeine. It works the same way each time, unlike another L-theanine product I tried, which was more variable. I'm not sure of the long-term effects of Suntheanine use, so it is probably good to have breaks from it. Real l-theanine in tea is the ideal, but it is accompanied by caffeine, and it is far more convenient to take a capsule than make tea.

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Gentle soothing

Posted by 4776688042352802320 on Sep 01, 2016

I heve used a few bottles, during day gives a gentle soothing, in the way you get less agitated , less sensible to external stressors. At night helps a little bit with sleep

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works as advertised

Posted by CIPRIAN on Aug 02, 2016

seems to do the job. is relaxing. no stomach issues.

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not effective

Posted by 5504038430281649264 on Jul 01, 2016

Not effective

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