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Natural Factors, Stress-Relax, Suntheanine, L-Theanine, 100 mg, 60 Chewable Tablets

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In Stock
  • Expiration Date: Jul 2018
  • Shipping Weight: 0.41 lbs (0.19 kg)
  • Product Code: NFS-02832
  • UPC Code: 068958028323
  • Package Quantity: 60 Chewable Tablets
  • Dimensions: 4.5 x 2.8 x 2.8 in, 0.35 lbs (0.16 kg)
Product Overview


  • Dietary Supplement
  • Mental Calmness & Relaxation
  • Suntheanine
  • Purity & Potency Guaranteed

Suntheanine contains pure L-Theanine, a unique amino acid found in a green tea that is emerging as the premier natural product to support mental calmness and relaxation. Suntheanine is produced via a proprietary enzymatic process, guaranteeing essentially pure L-Theanine for maximum effectiveness. In a tasty tropical fruit-flavored chewable tablet.

Recommended by Dr. Michael Murray, one of the world's leading experts on natural medicine.

Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada.

Suggested Use

Chew 1-2 tablets 3 times per day or as directed by a healthy professional.

Other Ingredients

Organic cane sugar, xylitol, stearic acid, silica, natural fruit flavor (banana, pomegranate, pineapple, mango, passion fruit, citric acid, magnesium stearate (vegetable grade).

Contains no artificial colors, preservatives, or sweeteners; no dairy, starch, wheat, gluten, yeast, soy, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs. Suitable for vegetarians/vegans.


Keep out of reach of children.

Sealed for your protection. Do not use if seal is broken. For freshness, store in a cool, dry place

Supplement Facts
Serving Size: 2 Tablets
Serving Per Container: 30
  Amount Per Serving %Daily Value
Calories 15  
Total Carbohydrate 4 g 1%‡
Sugars 3 g **
Suntheanine L-Theanine 200 mg **
‡ Percent Daily Values are based on a 2,000 calorie diet.
**Daily Value not established.
iHerb Customer Reviews

The greatest 'calmer' on the market.

Posted by Reviewer1836572 on Dec 12, 2016

Suntheanine takes care of stress and anxiety better than any pharmaceutical, and is natural and safe!

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Excellent product for children and adults

Posted by Reviewer2046448 on Aug 15, 2016

My son and I found out about this because of the research studies that have been done on children with ADHD and improving sleep with L-Theanine (available on PubMed). For me it helps cut the negative impacts of COMT/MAO genetic alterations, especially when coupled with MTHFR/MTRR. This is a simple, and safe alternative to supporting sleep and calmness in both adults and children.

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I love this product. It certainly does what it says it does. It relaxes me and I am able to sleep better and feel calm all the time.

Posted by 5158588402187191833 on Jun 21, 2016

SunTheanine certainly does what it says it does. It relaxes me and I am able to sleep better and feel calm all the time.

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Works Well and Tastes Great

Posted by ReaCovery on Jan 03, 2016

The first time I took half of one of these I knew it worked to lower my anxiety. I'm recovering from protracted antidepressant withdrawal and my morning anxiety (overactive fight flight response) has been difficult to live with the last few years. I've been looking for something to lower this as I'm recovering. 45 Minutes after I took one of these, I felt noticeably calmer. At first I thought it may be a placebo response, but it worked just the same whenever I took it. My daughter tried taking a whole tablet one night when she had a lot of study and was drinking heaps of coffee. She said she felt calm and clear and was able to get her work done much easier than usual, she asked me to buy her a bottle, which I did. The only concern I have with these is the added sugar, but if that's not an issue, then these are perfect and easy to take without water. 50mg at a time seems to work best for me or I get a bit apathetic and just want to lay around doing nothing.

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Some help

Posted by Reviewer1180831 on Oct 03, 2014

Not the glowing review of others but 3 caps made me feel slightly more mellow.

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