Outcome map · Supplement

Sleep quality: what the evidence supports

6 graded interventions for sleep quality, ranked by strength of evidence.

Overall grade
Grade C
Last revised
6
graded outcomes
0
references listed

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.

6 at grade C — 6 graded rows

What is known

Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.

  • L-TheanineEvidence grade C

    Relaxation, not sedation

    Smallmixed

  • Tart CherryEvidence grade C

    Small

    Smallmixed

  • PassionflowerEvidence grade C

    Modest

    Smallmixed

  • Lemon BalmEvidence grade C

    Often combined

    Smalllow

  • HopsEvidence grade C

    Usually with valerian

    Smallmixed

  • Ziziphus (Jujube / Suanzaoren)Evidence grade C

    Often in formulas

    Smallmixed

What is uncertain

Read off the same rows as above. Nothing here is added that the entry does not itself record.

  • Thin evidence: L-Theanine (grade C); Tart Cherry (grade C); Passionflower (grade C); Lemon Balm (grade C); Hops (grade C); Ziziphus (Jujube / Suanzaoren) (grade C).

The evidence in words

The evidence map

This is the ranked evidence for sleep quality: every compound in the knowledge base with a graded effect, best-supported first. Grades reflect replication and effect size, not popularity or marketing.

Best-supported

No intervention here reaches grade A or B — an honest reflection of how thin the evidence for sleep quality still is.

Weaker or unproven

L-Theanine (grade C) — Relaxation, not sedation · Tart Cherry (grade C) — Small · Passionflower (grade C) — Modest · Lemon Balm (grade C) — Often combined · Hops (grade C) — Usually with valerian · Ziziphus (Jujube / Suanzaoren) (grade C) — Often in formulas

Goes with

Entries that share this one's tags or conditions.

Sources

This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.

Last revised . A grade is this entry's reading of the evidence, not medical advice.