L-Theanine 200 mg 60 vcaps by NOW Foods contain a digestible form of L-theanine that is readily absorbed by the body. Another active ingredient is a carbohydrate called Inositol that is found naturally in cantaloupes and oranges. L-theanine is an amino acid that is found in many teas and fungi. Many nutritionists believe it contains natural calming agents that aid in relaxation and stress reduction.