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Special, Doctor's Best, Suntheanine L-Theanine, 150 mg, 10 Veggie Caps (Discontinued Item)


Out of Stock - Discontinued
  • Shipping Weight: 0.06 lbs (0.03 kg)
  • Product Code: FRE-00236
  • UPC Code: 753950002364
  • Package Quantity: 10 Veggie Caps
  • Dimensions: 1.5 x 1.5 x 2.7 in, 0.05 lbs (0.02 kg)
Product Overview


  • Dietary Supplement
  • Science-Based Nutrition
  • Relaxation without Drowsiness
  • Reduces Stress and Tension
  • Suitable for Vegetarians

Suntheanine is the premier, patented form of the amino acid L-theanine. Suntheanine is the purest form of L-theanine on the market today. L-Theanine is an amino acid derived from green tea that is responsible for the relaxation-inducing effect of tea consumption. Suntheanine has been shown to promote an alert state of relaxation. This is characterized by an increase in alpha brain waves (signifying a relaxed, alert state) and a decrease in beta brain waves (signifying an awake, excited state of mind).* Suntheanine may also improve sleep quality, enhance mental acuity and soothe away tension and nervousness.

  • Promotes a relaxed state without drowsiness
  • Eases stress and everyday nervous tension
  • Promotes a positive mood and alertness

Suggested Use

One capsule daily, or as directed by a health care professional.

Other Ingredients

Rice powder, vegetable capsule.

Contains nothing other than listed ingredients.

Supplement Facts
Serving Size: 1 capsule
Servings per Container: 10 servings
  Amount Per Serving % Daily Value
Suntheanine L-theanine 150 mg
† Daily Value not established.
iHerb Customer Reviews

Very effective for stress & anxiety

Posted by PurpleHeart on Jan 25, 2016

I have been using theanine for years. I tapered off prescription medication for anxiety and went back to the trusty l-theanine. Shortly after I take this, I get a feeling of calm. It helps me sleep at night as needed. I also will take during the day during stressful times and it works well. I am a forever grateful for theanine.

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Posted by Hungarian on Sep 11, 2014


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Did not feel a difference, but this brand is good

Posted by psoriasis on Apr 12, 2014

Personally I did not feel a difference but I trust this brand. Things like L-Theanine are very different when it comes to effect on different people. It may work for you but I did not feel any difference. However I trust Dr. Best so I give this supplement a 5 star rating.

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Posted by Sceptical-but-happy on Nov 16, 2013

Liked the freebie so much, that I had to order more.

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Posted by IHA611 on Sep 01, 2013

Very healthy product, Highly recommended!

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