L-Theanine and Supplements for sleep
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.
Goal guide
Supplements for sleep
17 compounds relevant to sleep, ranked by overall evidence grade.
Grade B17 graded outcomesrevised 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.
No outcome has the same name in both entries. They may still overlap under different wording — read the two lists below.
Graded only in L-Theanine
- Attention (with caffeine) Moderate effectEvidence grade B
- Acute stress / anxiety Small effectEvidence grade B
- Sleep quality Small effectEvidence grade C
Graded only in Supplements for sleep
- Magnesium Unclear effectEvidence grade B
- L-Theanine Unclear effectEvidence grade B
- Glycine Unclear effectEvidence grade B
- Melatonin Unclear effectEvidence grade B
- Kava Unclear effectEvidence grade B
- CBD (Cannabidiol) Unclear effectEvidence grade B
- Valerian Unclear effectEvidence grade C
- Apigenin Unclear effectEvidence grade C
- Tart Cherry Unclear effectEvidence grade C
- L-Tryptophan / 5-HTP Unclear effectEvidence grade C
- Reishi Unclear effectEvidence grade C
- Passionflower Unclear effectEvidence grade C
- Lemon Balm Unclear effectEvidence grade C
- Magnolia Bark Unclear effectEvidence grade C
- Hops Unclear effectEvidence grade C
- Ziziphus (Jujube / Suanzaoren) Unclear effectEvidence grade C
- GABA (Supplement) Unclear effectEvidence grade D
What each entry says about the other
- Supplements for sleep’s entry · Goes with: Grade B
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.