
L-Theanine, provided by Douglas Laboratories,
supplies 100 mg of pure L-Theanine in each vegetarian capsule. According to statistics released by the National
Institutes of Mental Health (NIMH), over 19 million Americans suffer from an
anxiety disorder. L-Theanine is a unique amino acid found in green tea. Green
tea has traditionally been used for centuries to help promote relaxation. In
recent times, L-Theanine has been studied for its use in causing relaxation
without drowsiness. One way to record relaxation analytically is by measuring a
weak electric pulse on the surface of the brain known as brain waves. Brain
waves are categorized into one of four groups: alpha, beta, gamma or theta.
Alpha waves are associated with a state of relaxation without drowsiness. In one
study, 200 mg of theanine generated alpha waves in the occipital and parietal
regions of the brain. No adverse side effects were reported in the study. Other
studies have indicated that the intensity of alpha waves generated is dose
dependent to the amount of theanine administered, and that theanine can reach
the brain 30 minutes after oral administration. In addition to relaxation, research on L-theanine
suggests that it can have significant benefits for cardiovascular, immune and
neurological health. L-Theanine may be a useful dietary supplement for
individuals wishing to support healthy mental functioning. Adults take 1 capsule daily or as directed by
physician. Warning: If you are pregnant or breastfeeding, or if you
are taking any prescription medication, consult a physician prior to use.
Excessive consumption may impair ability to drive or operate heavy machinery.
Not recommended for consumption with alcoholic beverages.
Description
Functions
Indications
Suggested Use
Side Effects/Warnings
How Supplied
Supplied in bottles of 60 vegetarian capsules.
Store in a cool, dry place, away from direct light.
Keep out of reach of children.
Ito K, Nagato Y, Aoi N, Juneja LR, Kim K, Yamamoto T Sugimoto S. Effects of L-theanine on the release of alpha-brain waves in human volunteers. Nippon Nogeikagaku Kaishi, 72; (1998) 153-157.
Juneja LR, Chu DC, Okubo T, Yokogoshi H. L-Theanine – a unique amino acid of green tea and its relaxation effect in humans. Trends in Food Science and Technology: 10; (1999) 199-204.
Kakuda T, Nozawa A, Unno T, Okamura N, Okai O. Inhibiting effects of theanine on caffeine stimulation evaluated by EEG in the rat. Biosci Biotechnol Biochem. 2000 Feb;64(2):287-93.
Kimura R, et al. Influence of alkylamides of glutamic acid and related compounds on the central nervous system. I. Central depressant effect of theanine. Chem Pharm Bull 1971;19:1261-7.
Yokogoshi H, et al. Reduction effect of theanine on blood pressure and brain 5-hydroxyindoles in spontaneously hypertensive rats. Biosci Biotechnol Biochem 1995;59:615-8.
| L-Theanine | 100 mg |
*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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