Question
Does L-theanine work?
In context of L-theanine·Promising72/100
Evidence strength for L-theanine is scored 68/100 in our rubric, separate from safety and marketing gap. Small-to-moderate trials; often caffeine co-administration; chronic outcomes less established.
Full ingredient file
This page answers one search-shaped question. For scores, FAQs, sources, and every section of the write-up, use the main L-theanine page.
Open L-theanine verdictOn-site comparisons
Side-by-side score context when both ingredients have published hubs.
Other questions on L-theanine
A few more focused pages for the same ingredient (we keep lists short on purpose).