L-Theanine 200 mg from Jarrow Formulas is a dietary supplement in capsule form containing L-theanine. Theanine is an amino acid found in green tea and has beneficial effects on the brain through the neurotransmitters dopamine and serotonin. It promotes the formation of alpha brain waves to support relaxation. Neurologically active amino acid. Promotes relaxation. 200 mg of L-theanine per serving. A unique amino acid found in green tea. Non-GMO, Vegan, Gluten-free. Recommended Dosage: Take 1 capsule once daily with water or juice on an empty stomach or as directed by your qualified healthcare professional. Store at a temperature not exceeding 25°C in a cool, shaded place, away from sunlight.