Theanine is an amino acid (a building block for proteins) found in green tea. It Acts as Anti-Depressant in Moderate Doses Can Suppress Appetite Act as a Cognitive enhancer or Nootropic. L-Theanine was discovered as a constituent of green tea in 1949 & was approved in Japan for unlimited use in all foods, including chocolates, soft drinks, & herb teas. L-Theanine may help the body's immune response to infection by boosting the disease fighting capacity of gamma delta T cells. Able to cross the blood–brain barrier, theanine has psychoactive properties. Theanine has potential ability to reduce mental & physical stress, improve cognition, & boost mood & cognitive performance in a synergistic manner with caffeine.*
Interactions: Theanine appears to decrease blood pressure. Taking theanine along with medications for high blood pressure might cause your blood pressure to go too low.
Dosage A 50 to 200mg (0.005g-0.02g) of theanine dosage is helpful for relaxation.Theanine increases the body's gamma amino butyric acid (GABA) levels.GABA not only induces a feeling of calm, it increases serotonin.