Theanine is an amino acid derived from herbal green tea and has calming and mood-promoting effects that can effectively lower mental and physical stress, and may also help with sleep disturbances. It has been seen to enhance the activity of an enzyme that breaks down beta-amyloid protein – which have been associated with the development of Alzheimer’s disease. Theanine may also help to lower blood pressure.
As with most amino acid supplements, your body generally needs vitamin B6 (pyridoxine) as a cofactor to enable it to metabolise them.
L-Theanine 100mg – From SunTheanine®, is a 100% pure, patented source of L-Theanine.
SunTheanine® is the only pure L-theanine which has 40 internationally recognised patents, and which has been scientifically proven in clinical studies to be safe and efficacious. Independent laboratory analysis confirms that various other products on the marketplace, claiming to contain L-theanine, are, instead, half L-theanine and half D-theanine (the mirror image of L-theanine), which has not been scientifically evaluated in published studies. The L- form is preferable as it is the exact image of the amino acid in its natural form found in the body.
Most amino acids come in two forms; D- or L- (such as L-tyrosine or D-tyrosine). D-amino acid is a mirror image of the L- amino acid – in other word the D- form is a backward image. Both can be taken. However, the L- form is preferable as it is the exact image of the amino acid in its natural form found in the body. The L- form is considered the more effective for overall human health.
L-Theanine 100mg – From SunTheanine®, a 100% pure, patented source of L-Theanine.
Other Ingredients: Cellulose, water (vegetarian capsules), cellulose, magnesium stearate and silica.
No sugar, salt, dairy, yeast, wheat, gluten, soy, corn, preservatives, artificial colours or flavours.
As a dietary supplement, adults take one tablet, one to three times daily between meals or as directed by a health professional.
Store in a cool, dry place and away from direct light.
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Akiko Higashiyama, Hla Hla Htay, Makoto Ozekib, Lekh R. Juneja, Mahendra P. Kapoor. Effects of l-theanine on attention and reaction time response. Journal of Functional Foods. Volume 3, Issue 3, July 2011, Pages 171-178.
Nobre AC, Rao A, Owen GN. L-theanine, a natural constituent in tea, and its effect on mental state. Asia Pac J Clin Nutr. 2008;17 Suppl 1:167-8.
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Kimura K, Ozeki M, Juneja LR, Ohira H. L-Theanine reduces psychological and physiological stress responses.
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Kim TI, Lee YK, Park SG, Choi IS, Ban JO, Park HK, Nam SY, Yun YW, Han SB, Oh KW, Hong JT. 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. 2009 Dec 1;47(11):1601-10.