- Theanine is an amino acid (a building block for proteins) found in green tea.
- People use theanine for treating anxiety and high blood pressure, for preventing Alzheimer’s disease, and for making cancer drugs more effective.
- L-theanine reduces stress, improves the quality of sleep, diminishes the symptoms of PMS, heightens mental acuity, and reduces the negative side effects of caffeine.
- Theanine has a chemical structure very similar to glutamate, a naturally occurring amino acid in the body that helps transmit nerve impulses in the brain. Some of the effects of theanine appear to be similar to glutamate, and some effects seem to block glutamate.
2-Amino-4- (ethylcarbamoyl) Butyric Acid, 5-N-ethylglutamine, Gamma-glutamylethylamide, L-Theanine, L-Théanine, N-Éthyl-L-Glutamine, Teanina, Théanine.
Source: WebMD, “Theanine”, www.webmd.com/vitamins-supplements/