888 852-4993

by Allergy Research Group

WHAT IS IT?

200mg of Zen contains L-Theanine 100 mg and Gamma-aminobutyric Acid (GABA) 275 mg per capsule. L-Theanine is an amino acid commonly found in green tea. 

GABA is a inhibitory neurotransmitter naturally found in brain.

Inert ingredients are silicon dioxide and carbowax. Do not confuse this with L-Threonine, a different substance.

WHAT DOES IT DO?

L-Threanine is a relaxant.

L-Theanine has a profoundly relaxing effect. In fact, it is a caffeine antagonist. The increase in alpha waves in the brain has been compared to a hot bath or a massage in effect. Unlike other relaxants, it does not cause drowsiness.

Nor does it interfere with the ability to think. In fact, it enhances the ability to learn, probably by decreasing the worry that interferes with the ability to concentrate. It actually increases concentration and focuses thought. It imparts a feeling of well-being.

L-Theanine's effects on the brain are due to several things. It increases a tranquilizing neurotransmitter called GABA (caffeine decreases it.) It increases dopamine, which is responsible in part for mood enhancement. It even protects neurons from glutamate excitotoxicity and reverses the damage. This kind of neuronal "burn-out" is often causes by lack of oxygen in the brain, usually from poor circulation.

It also lowers blood pressure, probably by increasing GABA which lowers blood pressure.

GABA is the most widespread and important inhibitory neurotransmitter in the brain. It relaxes and calms. Most tranquilizers or anticonvulsants are linked to GABA in some way. It does not cross the blood brain barrier well, however.

GABA in doses of 5 grams orally increase Human Growth Hormone (HGH) levels by 550% in 90 minutes in one study.

This product contains L-Theanine and GABA. L-Theanine by itself is also available. It may be used when a weaker effect is desired.

CAUTIONS

None known except sensitivity to it.

See Disclaimer.

DOSE

Take 1 or 2 capsules daily or as directed by a health care professional.

NHC sells 60 capsule bottles of 200mg of Zen for $19.90. The suggested retail price is $23.50.

CII

These statements have not been evaluated by the U.S. Food & Drug Administration (FDA).
The products discussed are not intended to diagnose, treat, cure, or prevent any disease.

 

Created  March 1, 1998 (Personal page April 25, 1995)
(This site was created from FrontPage 2000 at a resolution of 1024x768 in 32 bit color on a 19 inch monitor. It was checked using Microsoft IE 5.0. Your results may vary depending upon your browser, monitor, and color resolution.) Updated on May 25, 2003.
Gerry Wolke, RPh.