L-Theanine
(green tea)
What it isAn amino acid from green tea, structurally related to glutamate, taken as a calming supplement.
Why this oneIt promotes relaxation without sedation — the caffeine-smoothing companion in tea — with small trials in anxiety and sleep quality.
What limits itIt is a supplement with supplement-grade evidence: effects are gentle and inconsistent across studies.
NO BOXED WARNINGS
Principal riskNo boxed warning; evidence for the promoted stress and sleep uses is thin
Classes and tags
Clinical profile
Mechanism of action: L-Theanine ballicule
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