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88Herbs Premium Grade L-Theanine

88Herbs - Premium Grade L-Theanine

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Info: 60 Veg. Capsules (250 mg Each)

Green Theanine - An amino acid found in green tea to promote relaxation and improve mood and attention.

Info: 60 Veg. Capsules (250 mg Each)

Green Theanine - An amino acid found in green tea to promote relaxation and improve mood and attention.

Product Notes:

In addition to reducing stress and anxiety without inducing drowsiness (including by attenuating the increases in blood pressure and other physiological stress signals you might otherwise have during stressful situations), L-Theanine can also help sharpen your mental focus and concentration and improve your mood during your waking hours, as well as help produce a better quality, more restful sleep.

Virtually all of us are subjected to some type of psychological, socio-economic, or work-related related stress which can take a severe toll on our health or relationships. We may be tempted to seek out anti-anxiety medication, but prescription "anxiolytic" drugs tend to produce drowsiness and cause dependency. L-Theanine doesn't, even though it seems to work partly the same way benzodiazepines do: by increasing the effectiveness of our body's main inhibitory neurotransmitter, GABA.

L-Theanine increases the brain's alpha wave activity, the type most active during REM sleep... or achieved during peak states of deep meditation by Buddhist monks or long-term practitioners of Transcendental Meditation (TM). All this from a natural component of green tea – except purified and concentrated to a quickly absorbable form in about 12 times the dose you'd get from a single cup of tea.


Each capsule contains:

250 mg L-Theanine Pure Theanine (N-Ethyl-L-glutamine)

Non-medicinal ingredients: Cellulose, Hypromellose, Silicon dioxide.

This is part of 88 Herbs trademarked "Zero Series," which use absolutely 0 magnesium stearate, animal products and gelatins; allergenic materials, or additives.

Suggested Usage:

Adults: Take 1 capsule per day.


Risk Information: None available.

Health Canada Natural Product Number: 80050919.

Supporting Science:

“Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.” Nutrients, Oct. 2019.

“L-theanine, a natural constituent in tea, and its effect on mental state.” Asia Pacific Journal of Clinical Nutrition, 2008.

“Pharmacokinetics of theanine enantiomers in rats.” Chirality, 2005.

“Psychotropic effects of L-theanine and its clinical properties: From the management of anxiety and stress to a potential use in schizophrenia.” Pharmacological Research, Aug. 2019.

“Studies of advanced stages of meditation in the Tibetan buddhist and Vedic traditions. I: a comparison of general changes.” Evidence-Based Complementary and Alternative Medicine: eCAM, Dec. 2006.

“The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans.” Human Psychopharmacology, Oct. 2004.

“The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review." Plant Foods for Human Nutrition (Dordrecht, Netherlands), March 2020.

“The effects of L-theanine (Suntheanine®) on objective sleep quality in boys with attention deficit hyperactivity disorder (ADHD): a randomized, double-blind, placebo-controlled clinical trial.” Alternative Medicine Review, Dec. 2011.

UPC / Barcode: 627843451082