Whole crown daisy,
does it really help with Improved sleep quality and sleep onset?
research showsThe grade is ?. No human study was found that administered Glebionis coronaria as whole food, juice, extract, or a mixture and measured sleep quality, sleep onset, or insomnia symptoms. A brief classical record cannot establish a human sleep effect, so there is no score.
ads claimTaxonomic family membership or one historical phrase cannot be converted into shorter sleep onset in humans. Species, plant part, formulation, and measured sleep outcome must all match.
Useful facts when choosing a product
- On 2026-08-02, PubMed exact query 「(("Glebionis coronaria"[Title/Abstract] OR "Chrysanthemum coronarium"[Title/Abstract] OR "crown daisy"[Title/Abstract]) AND (sleep[Title/Abstract] OR insomnia[Title/Abstract] OR "sleep onset"[Title/Abstract]))」 found 0 eligible human studies after excluding botany, chemistry, agriculture, and animal records.
- On 2026-08-02, ClinicalTrials.gov, WHO ICTRP, UMIN-CTR, and ChiCTR searches combining the species names with sleep and insomnia terms found 0 eligible registrations.
- On 2026-08-02, 37 searches across Korean, Japanese, Chinese, and international databases found 0 human sleep-outcome studies using whole crown daisy, juice, extract, or mixtures.
- Bencao Gangmu, juan 26, gives one short line saying crown daisy settles heart qi, nourishes the spleen and stomach, and dispels phlegm-fluid. The same entry also warns that excess intake can oppress the chest.
- Li Shizhen stated that the plant entered the materia medica only with the Song-era Jiayou Bencao. Gerard's Corne Marigold was Chrysanthemum segetum, a different species, and was excluded.
- Verdict 351 is C with 54 points for a Chrysanthemum zawadskii extract and knee symptoms. It concerns a different species, formulation, and outcome and does not support crown-daisy sleep efficacy.
Chamgap Semantic Classification Code
Candidate index · review held
F.whole-crown-daisy.food.sleep-quality-and-sleep-onset.improve.UNKFoods and beverages > Whole crown daisy > Food consumption > sleep quality and sleep onset > Improvement claim > Unknown
An automated migration candidate, not an issued permanent code; exact claim scope remains under review. This machine-generated migration candidate helps retrieval but is not a permanent assignment. The original verdict ID and URL remain authoritative.
What the research actually shows
It has not been tested in humans. No paper or registered trial was found that administered Glebionis coronaria, formerly Chrysanthemum coronarium, as whole food, juice, extract, or a mixture and measured PSQI, sleep-onset latency, total sleep time, or insomnia symptoms. Retrieved records concerned phytochemistry, antimicrobial activity, agriculture, or animals. Verdicts exist for other Asteraceae species, but not for sleep effects of crown daisy itself. This verdict concerns the food itself, not an extract.
Why this is classified as ?
No human study measured sleep quality or sleep onset after crown-daisy intake, so the grade is ? and the score is null.
Counterpoint. The brief classical record is retained as cultural context, not used as an efficacy result.
Rejudgment record. Cross-check applied — Thirty-seven multilingual searches found no human study administering crown daisy and measuring sleep or sleep onset
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Improved sleep quality from whole crown daisy | ? | No human study measured this outcome. |
| Shorter sleep onset from whole crown daisy | ? | No human study measured this outcome. |
| Human sleep effect of crown-daisy extract | ? | No extract study measured human sleep outcomes either. |
Cross-check — AI research and Codex final gate
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Multilingual literature and trial-registry search on 2026-08-02 | Human sleep-outcome screening with 37 Korean, Chinese, Japanese, and English searches | 0 eligible human studies | Not applicable | Sleep quality, sleep-onset latency, total sleep time, and insomnia symptoms | No eligible whole-food, juice, extract, or mixture study | Search record documenting absence of direct human evidence |
Receipt — 1 References
All 1 cited sources were verified for existence at the original page (as of 2026-08-02).
Final verification and publication gate: Codex · Evidence date: 2026-08-02 · Corrections: none
Cite this verdict
[Chamgap] Whole crown daisy x improved sleep quality and sleep onset — Evidence Grade ?. 1 cited sources checked. Source: https://chamgap.com/en/verdicts/sleep/whole-crown-daisy-sleep-quality-sleep-onset/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
What this document does and does not do
Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.