L-Theanine is a free-form amino acid found in green tea. Each convenient, one-VegCap serving of Solaray L-Theanine includes L-theanine 200mg. In addition, it includes 100 mg of green tea (Camellia sinensis) (leaf) for powerful, additional nutritive support. With a long history of use, studies today show that L- theanine can help support healthy mood, relaxation and occasional stress. Like all Solaray products, L-Theanine with Green Tea is lab verified for potency, purity and identity. p>