UPDATED 04/27/2016

Theanine 200 Review
Theanine 200 Review

PUBLISHED: 11/18/2015 by BR Technical
Editor's Review: 3.9/5.0
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Is Theanine 200 Right for You?

Jarrow Formulas is a manufacturer based in Los Angeles, California, USA, known for its line of products that includes vitamins, minerals, probiotics, standardized herbal concentrate, enteral nutrition products, enzymes, amino acids.

Jarrow Formulas was founded în 1977 and incorporated în 1988. Today its products are marketed in the United States, Mexico, Canada and other parts of the world.

According to the company’s statement, “both retailers and consumers are assured of purity, value and potency when choosing these products.” “The company’s professional staff is actively involved in clinical studies and is working with universities, institutes and other academic environments around the world.”

Theanine 200 manufactured by Jarrow Formulas is a dietary supplement, a neurologically active amino acid identical to theanine found in green tea leaves.

Ingredients of Theanine 200

The supplement’s active ingredient is L-Theanine 200 mg.
Other ingredients: Cellulose, magnesium stearate (vegetable source) and silicon dioxide.
No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.

Effectiveness of Theanine 200

Jarrow Formulas is marketing a line of popular products that support brain function and promotes brain metabolism. One of them is Citicoline (CDP Choline) – a daily Cognizin Citicoline oral supplement that improves attention in adolescent males.

As for Theanine 200, the active ingredient L-Theanine is an amino acid derivative enzymatically produced, found in green tea. The company uses SunTheanine brand of L-Theanine.

Theanine 200 is often marketed aș a relaxant, as mood and sleep support, and for stress management.

Does the product cause drowsiness? The company and many consumers claim that it does not, that the product has a calming effect on anxiety without making you fall asleep. The product is beneficial for the brain metabolism and it may improve learning ability.

Theanine 200 exerts protective effects on the brain by reducing glutamate toxicity, and is also known to produce sensations of pleasure by affecting dopamine and serotonin neurotransmitters in the brain.

Jarrow Formulas does not produce a report of a clinical trial. However, it is known that Human studies have shown that taking L-theanine results in the emission of brain waves associated with a state of relaxation.
The hesitant consumer may find feedback from the testimonials. Numerous consumers have reported that they felt positive results after taking Theanine 200. They found that the product eases the tension, the stress and helps them to stay focused, feel a sense of well being. One consumer found that the product can actually reverse the effect of too much caffeine.

The average grading of the product is between 4.6 and 5 stars.

Are there side effects? Not too many. One consumer found that taking Theanine with medication for high blood pressure might cause blood pressure to go too low. Diarrhea occurred with an elderly patient. Another patient felt a little nauseated.

As with any other dietary supplement, it is recommended to consult with your health care professional if you have a medical condition, are pregnant, lactating, or trying to conceive, under the age of 18, or taking medication.

Suggested usage

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

Sale Price: $15.19

Free Trial* Available: No

Store: Amazon.com


  • The company claims that Theaning 200 induces relaxation without causing drowsiness, may improve learning ability and exerts protective effects on the brain.
  • The company offers a list of scientific panel members, claims that remains up-to-date on the latest emerging science, and that it closely monitors FDA and FTC regulations to ensure consumer safety and regulatory compliance of products.
  • Affordable price through retailers.


  • Jarrow Formulas does not provide results of a clinical trial.
  • It is not known for how many years the product is marketed.
  • No testimonials available on the company site.
  • No sample trial and no shipping costs are offered.

Does Theanine 200 work?

Many consumers state that they would recommend the product. “A miracle pill for lack of attention” wrote one consumer.
Caution is required if taken with other medication for high blood pressure. A health care professional should be consulted.
This product is not intended to diagnose, treat, cure or prevent any disease.

Anxiety Help,Review Box – Show On PageTheanine 200 Review
Is Theanine 200 Right for You?

Jarrow Formulas is a manufacturer based in Los Angeles, California, USA, known for its line of products that inclu…

Theanine 200 ReviewBR Technical42016-04-27 12:09:31
Is Theanine 200 Right for You?

Jarrow Formulas is a manufacturer based in Los Angeles, California, USA, known for its line of products that inclu…

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Theanine 200 Review on November 18, 2015 rated 3.9 of 5

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