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L-Theanine (PhytoSure™ Certified) 200mg NON-GMO (120 Vegecapsules)

Item # HTN0807

Retail Price: $26.95

Our Price $21.99 You save 18.40%

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L-Theanine (PhytoSure™ Certified) 200mg NON-GMO (120 Vegecapsules)
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      • PhytoSure™ certified L-Theanine

      • Derived from Green Tea Leaf

      • NON-GMO & 100% natural

      • Free of carriers, additives, and synthetic adulterants

L-Theanine is a non-proteinic amino acid that influences resting state activity and increases alpha frequency, which has been associated with a reduced level of anxiety. It has been shown to promote a "relaxed, yet alert, feeling at rest" (Owen et al., 2008).

Evidence-based research has shown a variety of benefits from taking L-Theanine. It has been shown to have a calming effect when people are under physical and psychological stress, enhance attentional capacity and mental clarity, and improve overall cognitive performance. It has also been found that L-Theanine improves simple reaction time, speed of numeric working memory, word recognition, and accuracy of sentence verification.


Giesbrecht, T., Rycroft, J. A., Rowson, M. J., & De Bruin, E. A. (2010). The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness. Nutritional Neuroscience, 13(6), 283-290. doi:10.1179/147683010X12611460764840

Owen, G. N., Parnell, H., De Bruin, E. A., & Rycroft, J. A. (2008). The combined effects of L-theanine and caffeine on cognitive performance and mood. Nutritional Neuroscience, 11(4), 193-198. doi:10.1179/147683008X301513

L-Theanine benefits; "healthorexia" dangers.(ask the EN experts). (2013). Environmental Nutrition, 36(10), 2.

Supplement Facts - L-Theanine

Serving size: 1 Vege Capsule

Per Serving
% Daily Value
PhytoSure™ L-Theanine (from Green Tea (Camellia sinensis, leaf)) 200mg *

*Daily Value not established.

Other Ingredients: Hypromellose, microcrystalline cellulose, magnesium stearate, and silicon dioxide.

Free of: Milk and milk by-products, egg or egg by-products , fish or fish by-products , shellfish or shellfish by-products, tree nuts, wheat or wheat by-products, peanuts or peanut by-products , soybeans or soy by-products. (GMO Free)

Directions: Adults: Take one (1) Vege capsule daily as a dietary supplement or as recommended by your healthcare professional.

If you are pregnant or nursing a baby, seek the advice of a health professional before using this product.

Keep bottle tightly closed. Store in a cool, dry place at controlled room temperature 15°C-30°C (59°F-86°F). Do not refrigerate.

Health Thru Nutrition® is a registered trademark of EPIC.
PhytoSure™ is a certification mark of CAS BioSciences, LLC,

Manufactured in a certified cGMP U.S.A. Facility
Manufactured for: Health Thru Nutrition
30 New York Ave.
Westbury, NY 11590