Theanine

    Written by:
    Bill Willis, Thomas Solomon

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    by:

    Nick Milazzo
    Last Updated: September 27, 2023

    Theanine, also commonly referred to as L-theanine, is a naturally occurring amino acid found in tea. Supplementation with L-theanine may help reduce stress and anxiety and might improve sleep quality and some aspects of cognitive function.

    Overview

    Dosage information

    Clinical studies typically use L-theanine at a dosage of 100–400 milligrams (mg) per day.

    Frequently asked questions

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