L-Theanine is an amino acid found almost exclusively in tea that influences the central nervous system through a number of mechanisms. It crosses the blood-brain barrier in a dose-dependent manner within 30 minutes, and influences levels of the neurotransmitters dopamine, gamma-aminobutyric acid (GABA), serotonin, norepinephrine, and glutamate. These effects cause a significant increase in alpha brain wave activity, indicative of a state of wakeful relaxation, increased performance under stress, improved learning and concentration, as well as decreased anxiety.
Studies also suggest that L-theanine may have neuroprotective properties against brain injury, such as that resulting from stroke, as well as from environmental neurotoxins. L-Theanine’s neuroprotective capacity has been attributed to its effects on N-methyl-D-aspartate (NMDA) receptors, and brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF) production. Because it reduces levels of norepinephrine, it has also been shown to have a hypotensive effect. In clinical trials, L-Theanine has been shown to buffer sympathetic activity during stressful events, reducing subjective as well as physiological stress responses.
- Contains Suntheanine, the most clinically studied L-Theanine
- Suntheanine is a pure form of L-Theanine, naturally extracted from green tea using a patented enzymatic process
- Reduces stress and anxiety, restoring a calm mental state
- Chewable tablets are convenient and fast acting
- Delicious tropical fruit flavoured chewable
Serving Size: 6 chewable tablets
Servings per Container: 15
Each Tablet Contains:
Suntheanine® L-Theanine..................................................................... 100 mg
Non-medicinal Ingredients: Organic cane juice, xylitol, stearic acid, silica, natural fruit flavours (pineapple, banana, pomegranate, mango, passionfruit), citric acid, vegetable grade magnesium stearate (lubricant).
Contains no artificial preservatives, colours or sweeteners and no dairy, soy, wheat or yeast.
Chew 1–2 tablets 3 times per day or as directed by a health care practitioner.
While no specific contraindication exists or is predicted, data is lacking for use during pregnancy, lactation, and in children, and the dosage may need to be reduced for those less than 18.
L-theanine is known to have a hypotensive effect in some individuals, and concomitant use of antihypertensive drugs may potentiate their activity.