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DaVinci Labs   L-Theanine 200 mg - 120 Vegetarian Capsules

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7 Reviews

"This L-Theanine is helpful with stress management."  Read all reviews

Item Number: DV1313
Serving Size: 1 Capsule Servings per Container: 120
Price per Serving:  $0.58 Price per Unit*: $0.58 per Capsule
* Price Per Unit may reflect product's price per capsule, tablet, ounce, fluid ounce, etc.
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A dietary supplement that helps promote a restful state. L-Theanine has shown the ability to promote deep muscle relaxation and improved quality of sleep. Its known for its calming effects in the brain and is shown to support increased concentration and focus while reducing irritability. DaVincis L-Theanine is the Suntheanine® brand‚ which means it is 100% pure L-Theanine in a patented‚ pharmaceutical grade form.

Recommended for:
- Stress Management.
- Relaxation.
- Reducing irritability.

About L-Theanine

L-Theanine is a naturally occurring amino acid found in green tea and is a derivative of glutamic acid‚ a major neurotransmitter in the brain.

L-Theanine is known for its calming effects in the brain and has been shown to support concentration and focus while it reduces irritability and low mood states. It directly stimulates production of alpha brain waves‚ giving the body a sense of deep relaxation and mental alertness without drowsiness.

L-Theanine enables the body to produce other calming amino acids‚ such as dopamine‚ GABA and Tryptophan and helps with concentration‚ focus‚ deep muscle relaxation and improved quality sleep.

L-Theanine has been shown to also help the regulation of blood pressure within normal ranges. L-Theanine produces beneficial effects on the nervous and cardiovascular systems.

L-Theanine from DaVinci® Laboratories is Suntheanine® brand from Taiyo International‚ Inc. which has been extensively researched. Research studies on Suntheanine® include reducing stress and irritability‚ promoting relaxation‚ sleep quality‚ learning and concentration.

Suntheanine® brand L-Theanine is structurally identical to the L -Theanine compound naturally found in green tea. It should be noted however‚ that all research mentioned was conducted using Suntheanine® brand and not L-Theanine from Green Tea Extract.

L-Theanine can be used daily or just when you need to relax.

L-Theanine from Suntheanine® supports relaxation without causing drowsiness.

These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

  • MFG # 0200132.120
  • UPC # 026664213211
Official Website:

Serving Size: 1 Capsule
Servings pr Container: 120

Amount per Serving % Daily Value

L- Theanine (Suntheanine brand) 200 mg *

*Daily Value not established.

Other Ingredients: Rice flour‚ vegetable cellulose (capsule)‚ vegetarian leucine.

Vegetarian / Gluten Free.

As a dietary supplement‚ take 1 capsule daily‚ or as directed by your healthcare practitioner.

If pregnant or nursing‚ consult your healthcare practitioner before taking this product.

Keep out of reach of children. Store in a cool‚ dry place.

Color of this product may vary due to color variations of the natural ingredients.

  • Gluten Free

Ratings and Reviews

Write a Review
  • 4.3
4 7
  • 7 Reviews
    • Verified Buyer


      from TIGARD OR on 4/02/2020
      This L-Theanine is helpful with stress management.



      review-checkI would recommend this item to a friend.
    • Verified Buyer

      brand didnt work

      from Virginia on 4/22/2014
      I have taken other brands and is great but this is a new brand for me and I felt nothing like placebo
      0 of 1 people found the following review helpful.
    • Verified Buyer

      This is a great product!

      from Rockford, IL on 9/25/2013
      My wellness doc/chiropractor recommended L-Theanine to me to help me with stress and anxiety. Life is busy and its easy to get stressed out about everything that needs to get done each day but L-Theanine really helps me to not get so worked up so Im able to get on with my day in a calmer happier yet totally alert and in control way. Ive also found that if I do find myself getting a little too stressed when Ive taken the product that it is easier for me to calm myself down (I do "belly-breathing"--works great!). Ive also taken L-Theanine at bedtime to help me relax and be able to sleep better.


      It helps me to have less anxiety as I go about my day and to get better sleep at night. It does not make me sleepy and best of all it is a natural product without the potential for harmful side-effects.


      Its kind of expensive especially if you take 2-3 a day which I sometimes do depending on whats going in my life at the moment.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      the calming vitamin

      from Cincinnati, OH on 4/15/2013
      I take L-Theanine for stress -- it helps keep me calmer.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Very Effective Product

      from Evanston, Il. on 12/27/2012
      Ive been taking this brand of L-Theanine for a little over a month. It definitely helps me feel calmer aids in a sense of well being and sometimes I find my thinking processes a bit more manageable - which amounts to an increased ability to manage stress and situations a little more effectively. I deal with depression and anxiety and this is definitely a useful tool in the arsenal of good vitamins minerals and amino acids.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Work great!

      from Portland, OR on 4/01/2011
      My naturopath recommended L-Theanine by DaVinci Labs over Xanax and it works great with no side effects.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Excelent quality for price!

      from san juan, PR on 12/09/2010
      My younger child needs to take many supplements for his autism. Between those I discover that L-Theanine by DaVinci Labs works great for me too he takes it to calms down and mommy too...It really works. (The dosage is perfect for me.. I don't have to take 20).
      review-checkI would recommend this item to a friend.

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Additionally, PureFormulas is unable to directly recommend products in relation to specific health conditions. Please contact your trusted healthcare practitioner for direct product recommendations.

If you have any general questions regarding orders or our policies and programs, please contact our Customer Happiness Team @ 1.800.383.6008

If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Your healthcare professional is the best source for guidance before beginning an exercise or nutritional supplement program.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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