L-Theanine and L-Theanine for Sleep quality
Each entry’s own grades, side by side. A grade says how strong the evidence is for one outcome — it does not rank one entry over the other.
Compound or practice
L-Theanine
The calm in green tea — pairs with caffeine to keep the focus and drop the jitter.
Grade B3 graded outcomesrevised Jul 10, 2026
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
Evidence brief
L-Theanine for Sleep quality
Evidence grade C — Relaxation, not sedation
Grade C1 graded outcomerevised Jul 10, 2026
Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.
Graded in both
Outcomes are matched by name. Two entries can describe the same outcome in different words, so one listed further down may still be graded in the other.
| Outcome | L-Theanine | L-Theanine for Sleep quality |
|---|---|---|
| Sleep quality | Evidence grade CSmall effectmixedRelaxation, not sedation | Evidence grade CSmall effectmixedRelaxation, not sedation |
Graded only in L-Theanine
- Attention (with caffeine) Moderate effectEvidence grade B
- Acute stress / anxiety Small effectEvidence grade B
Graded only in L-Theanine for Sleep quality
None — every outcome it grades is graded in both.
What each entry says about the other
- L-Theanine for Sleep quality’s entry · Goes with: Read the full L-Theanine monograph
Both columns are read from the entries as they stand in this library. A comparison is not advice to take either one, and it is no substitute for a clinician who knows the person.