L-theanine is an amino acid found primarily in green and black tea and some mushrooms, and is available in pill or tablet form. It is said to help ease anxiety, stress, and reduce insomnia.
It may also improve mental focus
, help people sleep more easily and deeply
, and contribute to feelings of relaxation by reducing resting heart rate.
Additionally, research suggests that L-theanine could benefit a person’s mental and physical health.
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L -theanine is the most common form. Theanine is similar to glutamate, a naturally occurring amino acid. Glutamate helps transmit nerve impulses in the brain. Theanine sometimes acts like...
THEANINE - Uses, Side Effects, and More - WebMD
Common Names Theanine Gamma-glutamylethylamide N-ethylglutamic acid Jump to: For Patients & Caregivers For Healthcare Professionals For Patients & Caregivers Tell your healthcare providers about any dietary supplements you’re taking, such…
L-Theanine | Memorial Sloan Kettering Cancer Center
L -theanine is an amino acid that occurs naturally in tea leaves and dissolves readily in water . It also supplies green and black teas with their savory, umami flavor and…
L-Theanine for Sleep | Sleep Foundation