What does L-theanine powder do?

Theanine (L-Theanine) is a unique non-protein amino acid, mainly found in green tea, especially in buds and leaves, accounting for about 1-2% of the dry weight.

L-Theanines are all L-shaped, and the pure product is colorless needle-like crystals with melting points between 217 and 218℃. Easy to soluble in water, slightly bitter and fresh and sweet. Insoluble in anhydrous ethanol and anhydrous ether.

Resistant to high temperatures, but may degrade under strong acids, strong alkalis or long-term storage.

Xi'an Tongze Biotech can provide different types of L-theanine, natural and synthetic. Natural theanine is costly and has relatively good synthesis, so choose according to your needs.

1.Relieve stress and anxiety

It can promote the release of GABA sedative neurotransmitters and inhibit excessive glutamate excitation.

It is very effective for daily emotions. After drinking high theanine green tea, relieve tension within 15-30 minutes, which can relax muscles but be awake, reduce stress hormone levels, stabilize heart rate, and stabilize mood.

2.Improve concentration and cognition

L-Theanine can increase dopamine, serotonin, and regulate prefrontal cortex activity.

At work or study, especially under high pressure, eating L-Theanine and caffeine compound drinks can reduce the number of times you are distracted and enhance your detailed processing ability. At the same time, it can extend the concentration time by 1-2 hours to avoid tension and palpitations caused by caffeine.

3.Improve sleep quality

At night, it can reduce glutamategic nerve excitability, regulate sleep quality, and reduce the number and frequency of awakenings.

If people with sleep disorders, they can take L-theanine capsules before going to bed, with a dose of 100-200mg/capsules, which can shorten the sleep time, increase deep sleep time, and reduce night awakening.

4.Protect the cardiovascular

Promote nitric oxide release by inhibiting the angiotensin converting enzyme ACE. Improve vascular endothelial function. People who drink green tea for a long time have a more stable blood pressure, and the systolic blood pressure is reduced by 3-5mmHg on average. Therefore, patients with hypertension can take 3 cups of green tea per day or take theanine capsules at a dose of 100-150mg/capsules.

1. If the gastrointestinal cotton is touching, taking high doses >400mg on an empty stomach may cause nausea and abdominal pain.

2. Patients with hypertension, combined with antihypertensive drugs may lead to hypotension, abnormal blood pressure fluctuations, and symptoms of dizziness and fatigue.

3. It is not recommended to take L-theanine related products for pregnant women/lactation and children under 12 years old. People are prohibited from taking it two weeks before the operation to avoid the risk of intraoperative bleeding.

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

2.Kahathuduwa CN, et al. (2019)
L-Theanine and caffeine improve target-specific attention to visual stimuli
J Nutr Neurosci. 22(6):449-458.

3.Lyon MR, et al. (2011)
The effects of L-theanine on sleep quality in boys with ADHD
Acta Paediatr. 100(5):e78-81.

4.Rogers PJ, et al. (2012)
L-Theanine supplementation and blood pressure response to mental stress
J Nutr Sci. 1:e18.

5.Turkozu D, et al. (2017)
L-Theanine unique amino acid of tea, and its metabolism, health effects, safety
Crit Rev Food Sci Nutr. 57(8):1681-1687.

6.EFSA Panel on Dietetic Products (2011)
Scientific Opinion on L-theanine safety
EFSA Journal 9(4):2068.