The natural amino acid, Theanine, present in Green Tea, has been found to increase alpha waves in the brain, associated with a state of \"alert relaxation\" and supporting a state of wellbeing. It also assists mental alertness, learning and concentration. Theanine may help relaxation and calm without drowsiness May help counteract stimulatory effects of caffeine Encapsulated with these natural ingredients:Hydroxypropyl methylcellulose (carrageenan, pectin), cellulose, silicon dioxide, vegetable magnesium stearate.