- Promotes feelings of relaxation
- No feelings of drowsiness or fatigue
- Promotes learning ability
- Has nootropic potential
- Nullifies feelings of stress
- May cause glutamate inhibition
- Enzymatically produced SunTheanine®
- 100% pure form of L-Theanine
- Supports the generation of brain α-waves
Life Extension L-Theanine is a dietary supplement containing 100 mg of L-theanine per capsule. It should be added that this is not green tea leaf extract, but a product obtained during a patented fermentation process that mimics the natural one occurring in the plant. It is the purest, best studied with the highest quality L-theanine available on the market, containing 100% of this isomer.
It is worth knowing that in these days of poor control over the supplement market, many products with "L-Theanine" in their name contain only half of this substance in the total weight of the product. The other half is a completely different form, known as D-theanine, which has not been properly tested and is not recommended for use.
The L-theanine used in Life Extension's L-Theanine product is the only pure form of Suntheanine®, protected by 40 US and international patents. It has been scientifically proven to be a safe agent with a potentially interesting spectrum of uses.
L-Theanine is an amino acid isolated from green tea (Camellia sinensis) that can produce a calming effect in the brain. In Asian countries, the practice of enriching beverages and chewing gums with theanine is used to induce a state of relaxation. It is believed that although this compound induces a feeling of relaxation, it does not restrict brain function and does not cause the feeling of drowsiness that very often manifests itself when using preparations with similar effects.
Learning abilities
Studies on rodents have shown that theanine can enhance learning and memory abilities. The mechanisms of this phenomenon are believed to work by "quieting" the part of the brain responsible for worry. Thus, we give the central nervous system a rest and it is possible to better use our resources on the ability to concentrate and focus thoughts.
L-Theanine vs. γ-aminobutyric acid
As a derivative of glutamine, theanine shares some structural similarities with it and the neurotransmitters of which it is a precursor (GABA, glutamate). L-theanine can increase amounts of GABA, which is said to allow better rest and create a sense of good mood. It's worth mentioning that caffeine, for example, decreases available γ-aminobutyric acid at synapses, and this can cause anxiety, nervousness and sleep disturbances.
Brain wave α
Theanine is considered to be a nootropic compound that can have a calming effect, offset stress and anxiety, and improve mood. L-Theanine appears to increase the intensity of brain alpha waves used in rapid learning techniques. Such an effect may contribute to a beneficial increase in productivity and learning efficiency.
L-theanine and glutamate toxicity
When tested in vitro in neuronal cell cultures and in vivo in rodents, theanine significantly reversed the toxicity induced by glutamate, a substance that is harmful to the human body. It interferes with the brain stem and artificially induces appetite stimulation. It can act on the limbic system, causing excessive sweating, stress reactions, elevated blood pressure, palpitations and migraines. It also reduces perception, learning ability and concentration. Glutamate's neurotoxicity may be one of the causes of neurodegenerative and degenerative brain diseases.
Life Extension L-Theanine is a recommended product for all people who are burdened by significant mental and physical exertion. It can be used by people who are in the midst of periods of intense study (exams) and intensive and long mental work (during large projects and jobs). It is also recommended for athletes whose disciplines require concentration and memorization, as well as physically active people whose recovery may be impaired by the effects of chronic stress and little sleep.
