How Much L-Theanine Is in Green Tea?

L-Theanine is a unique amino acid that, when consumed, affects the alpha frequency band waves, inducing relaxation without the side effect of sleepiness. It’s long been known that green tea has it, but how much L-Theanine is in green tea exactly? The answer: An eight-ounce cup typically contains between 20 to 60 mg of L-Theanine.

As an avid consumer of all kinds of tea, it is my duty and pleasure to get to know what each variation of this delicious staple is all about, and green tea is no excepti...