Question
Does Theanine work?
In context of Theanine·Insufficient evidence56/100
Evidence strength for Theanine is scored 48/100 in our rubric, separate from safety and marketing gap. Human data quality varies by indication and extract. Registry evidence tier: low. Use the evidence score on this page as a directional read, not a substitute for systematic reviews for your specific question.
Full ingredient file
This page is a short answer. Mechanisms, dosing notes, sources, and the rest of the verdict live on the hub for Theanine.
Open Theanine verdictOther questions on Theanine
A few more focused pages for the same ingredient (we keep lists short on purpose).