Vital Nutrients L-Theanine 200mg - 60 Capsules | Vital Nutrients L-Theanine by Vital Nutrients - delivers 200 mg L-Theanine per serving.L-theanine is an amino acid naturally found in tea leaves, particularly in green tea. L-theanine has been consumed for centuries, primarily through tea consumption. Traditional tea-drinking cultures, especially in East Asia where green tea is prevalent, have unknowingly incorporated L-theanine into their daily routines. While the historical use of L-theanine is deeply rooted in tea-drinking traditions, its isolated supplementation has become more common in recent years. Researchers and consumers alike have shown growing interest in exploring its potential benefits, leading to an increase in studies and awareness surrounding L-theanine.Suggested use - 1 capsule, 3 times a day or as directed by a healthcare practitioners.