Anxiety is a very common challenge for those with gluten sensitivity; L-Theanine, an extract of green tea, has been one of Dr. Doherty clinical favorites for the last decade. L-Theanine is an amino acid that enhances GABA, one of our calming brain chemicals. Unlike anti-anxiety medication, it is non-addictive, doesn't cause drowsiness, and increases focus.  It can be taken as needed for anxiety, takes effect in 20 minutes and lasts 4-6 hours. According to studies, taken daily, it has a powerful neuroprotective effect, improving memory and decreasing your risks of dementia. L-Theanine can also be helpful for insomnia related to stress and anxiety. As with all our supplements we batch test C-liac Vitality L-Theanine for gluten for your safety. Our supplement contains patented Suntheanine and is manufactured in the United States. We hope it works as well for you as it has for hundreds of our patients.

Dosage: Take 1 capsule two to three times daily. Under times of increased stress you can increase the dosage to 2 capsules 3 times daily, or as recommended by your healthcare practitioner. 60 Vegetarian Capsules/bottle.

References:

Park, SJ et al. 2011. A Combination of Green Tea Extract and l-Theanine Improves Memory and Attention in Subjects with Mild Cognitive Impairment: A Double-Blind Placebo Controlled Study. J Med Food;14(4):334-43

Kim, TI, 2009. l-Theanine, an amino acid in green tea, attenuates beta-amyloid-induced cognitive dysfunction and neurotoxicity: reduction in oxidative damage and inactivation of ERK/p38 kinase and NF-kappaB pathways. Free Radic Biol Med.1;47(11):1601-10

Nobre, AC et al. 2008. L-theanine, a natural constituent of tea, and its effect on mental state. Asia Pac J Clin Nutr.;17 Suppl 1:167-8

Yokogoshi H, Kobayashi M, Mochizuki M, Terashima T (1998). "Effect of theanine, r-glutamylethylamide, on brain monoamines and striatal dopamine release in conscious rats". Neurochem Res 23 (5): 667–73.

Cho, HS et al. 2008, Protective effect of the green tea component, L-theanine on environmental toxins-induced neuronal cell death. Neruotoxicology. 29 (4):656-62

Lu, K. et al. 2004.  The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans. Hum Psychopharmacol;19(7):457-65

Percival, SS. 2008. Bioactive food components that enhance gammadelta T cell function may play a role in cancer prevention.  J Nutr.;138(1):1-4

Juneja LR, et al. 1999. L-theanine—a unique amino acid of green tea and its relaxation effect in humans. Trends Food Sci Tech 10:199-204.

Kumura K, et al 2006, L-Theanine reduces psychological and physiological stress responses. Biol Psychol, 2007 Jan;74(1):39-45.

Pradeep, J Nathan et al. 2006. The Neuropharmacology of L-Theanine (N-Ehyl-Glutamine) A Possible Neuroprotective and Cognitive Enhancing Agent. J Herb Pharmacother. 2006, Vol. 6, No. 2 : 21-30

Yokogoshi H, et al. 1998. Hypotensieve effect of -glutamylmethylamide in spontaneously hypertensive rats. Life Sci 62:1065-68.

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.