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  Theanine

60 Gel Caps
 
Price: $20.00

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Theanine is a unique amino acid found almost exclusively in green tea that exerts beneficial effects on brain metabolism. Individuals within the autism spectrum frequently are found to have high levels of glutamates that result in the overcitation, damage, and death of neurons. Theanine competes with glutamates to bind to the same receptor sites, preventing glutamates from overexciting neurons. Theanine may improve learning ability and sensations of pleasure by affecting dopamine and serotonin neurotransmitters in the brain. Theanine also suppressions glucocorticoids, which is associated with depression - by blocking certain signals in the brain activated by glutamate may be as effective as prescription antidepressants.(1) Our Theanine is 100% L-theanine, made enzymatically from amino acids and is identical to the theanine found in green tea.*

Glutamate-activated signals not only affect mood, they affect memory and learning.(2) Memory and learning are similar biochemical processes in the brain. If an animal can’t remember, it can’t learn. Stroke, Alzheimer’s disease, and alcohol all cause memory loss involving disruptions in glutamate-related signals that inhibit the storage and retrieval of memories.* (3-5)

Falling asleep is one thing; staying asleep and getting quality sleep is another. Researchers in Japan gave volunteers 200 mg of L-theanine daily and recorded their sleep patterns on devices worn around their wrists. The L-theanine didn’t cause the subjects to sleep longer, but it did cause them to sleep better. It was documented that sleep quality, recovery from exhaustion, and refreshed feelings were all enhanced by L-theanine. Those taking L-theanine felt like they slept longer than they actually did. (6)

Ingredients:1 capsule provides the following percentages of the Daily Value:

NUTRIENT

AMOUNT

L-theanine

200 mcg

Other ingredients: Rice flour, magnesium stearate (vegetable source) and silicon dioxide. Capsule consists of gelatin.

DOSAGE: Take 1 to 2 capsules per day with water or juice on an empty stomach, or as directed by your qualified health care consultant.

1. Sanacora G, Gueorguieva R, Epperson CN, et al. Subtype-specific alterations of gamma-aminobutyric acid and glutamate in patients with major depression. Arch Gen Psychiatry. 2004 Jul;61(7):705-13.

2. Kolb JE, Trettel J, Levine ES. BDNF enhancement of postsynaptic NMDA receptors is blocked by ethanol. Synapse. 2005 Jan;55(1):52-7.

3. Yamada KA, Covey DF, Hsu CY, et al. The diazoxide derivative IDRA 21 enhances ischemic hippocampal neuron injury. Ann Neurol. 1998 May;43(5):664-9.

4. Bao HY, Zhang J, Yeo SJ, et al. Memory enhancing and neuroprotective effects of selected ginsenosides. Arch Pharm Res. 2005 Mar;28(3):335-42.

5. Tyszkiewicz JP, Yan Z. Beta-Amyloid peptides impair PKC-dependent functions of metabotropic glutamate receptors in prefrontal cortical neurons. J Neurophysiol. 2005 Jun;93(6):3102-11.

6. Available at:
http://nutraingredients.com/ news/news-ng.asp?id=50679-green-tea-lulls. Accessed October 12, 2005.

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.