WHAT IT IS: L-Theanine is the predominant amino acid in green tea leaves. The amount of Theanine in the leaves will depending on the time of the growing season the tea leaves are harvested. This is due to the natural process of polyphenols, in which the tea plant changes the theanine into catechins. Catechins are known for their antioxidant benefits and are what green tea is generally known and consumed for.
HOW IT WORKS: L-Theanine is absorbed from the small intestine by means of a sodium-coupled active transport process, competing for absorption with methionine amino acids (Isoleucine, Leucine, and Valine). Crossing the blood-brain barrier, it's shown to increase the brains output of Alpha waves (waves associated with being awake and alert but relaxed), reducing stress, and producing a calming effect.
PRIMARY AFFECTS: Effective against stress, tension, and anxiety. Shown to effect the release or reductions of dopamine and serotonin (both neurotransmitters) causing improved learning ability, memory, mental focus, concentration, and the promotion of creativity. L-Theanine has also been shown to reduce high blood pressure, aid in obtaining a better and more sound sleep, and has been beneficial in cancer therapy.
EFFECTIVE DOSAGE LEVEL: Studies have shown the effectiveness in dosage ranging from 50mg to 200mg daily (about 2-4 cups of green tea). Effected are noted in generally 30-40 minutes.
SUPPLEMENT CONFLICTS: There are no conflicts associated with the use of Theanine.
SIDE EFFECTS: No side effects have been reported.
ADDITIONAL RESEARCH IN LONGEVITY: L-Theanine is currently being studied for its effectiveness as a treatment for PMS, as an alternative to Ritalin for adults and children, for it's ability to offset forms of high blood pressure, and for it's anti-cancer properties. Also being studied is the offsetting effect L-Theanine has on caffeine, being as though tea leaves and green tea have a high content of caffeine, yet still produces a relaxing effect.
