CHAMGAP
APPROVEDReviewed and approved by the Chamgap Editorial Team (2026-07-16). The draft was written by AI, the existence of all 2 cited sources was verified at the original page, and the verdict passed blind grading and adversarial audit. Methodology v0.6.
Verdict No. 352 · Search date 2026-07-16 · Methodology v0.6

Lilium lancifolium extract powder,
does it really help with Improvement of joint discomfort and function?

30-Second Summary
C
Evidence Grade C · 48 · Safety unknown
Efficacy was rated separately from safety. No clear serious safety signal emerged over 12 weeks, but long-term and cross-product evidence is limited.
What the
research shows
A trial of 100 participants taking HY-LL at 1 g/day for 12 weeks found small improvements over placebo in VAS and K-WOMAC pain and function. It used a per-protocol analysis, was a single-product study in which 9 of 10 authors were affiliated with the ingredient supplier hy, and found no between-group difference in objective biomarkers.
What the
ads claim
Individual recognition or a product launch does not establish equivalent efficacy for Lilium foods or extracts with different specifications.
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Useful facts when choosing a product

  • The HY-LL dose in the clinical trial was 1 g/day.
  • hy supplied the study material and 9 of 10 authors were affiliated with hy.
  • Official hy material confirms a joint-health product using the ingredient, but the sales format is not independent efficacy evidence.
Gap Measurement · Verdict 352 · C 48
What advertising claims
What independent, higher-quality research supports
△ GAP
01

What the research actually shows

The key evidence is one double-blind randomized placebo-controlled trial of 100 randomized participants using HY-LL at 1 g/day for 12 weeks.

02

Why this is classified as C (48)

A C cap applies because the evidence is one manufacturer-linked proprietary-ingredient RCT using subjective VAS and WOMAC endpoints.

Counterpoint. The positive trial is not dismissed, but objective outcomes and independent replication are needed.

Rejudgment record. Reassessment (cross-check reflected) — C cap for a manufacturer-linked proprietary ingredient and subjective joint endpoints

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)GradeBasis
Improvement of joint pain and discomfortCSingle-trial signal in VAS and WOMAC pain
Improvement of joint functionCSmall between-group difference in WOMAC function

Cross-check — Codex and Claude

This verdict was drafted by Codex through literature review and source-existence checks, cross-checked through blind grading and adversarial audit, and settled by reapplying the methodology boundary rules. Cases with split grades were resolved through rejudgment.
03

Evidence Table

StudyDesignSampleFundingEndpointResultWeight
Jeon et al. (2024), Life (Basel)Randomized double-blind placebo-controlled trial, 12 weeks100Reported no external funding; hy supplied the study product and many authors were hy employeesVAS, K-WOMAC, and joint-related blood biomarkersVAS and K-WOMAC total, pain, and function showed significant between-group differences; biomarkers did notModerate-low
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Receipt — 2 References

All 2 cited sources were verified for existence at the original page (as of 2026-07-16).

Jeon S, Lee H, Lee JH, et al. Effects of Lilium lancifolium Thunb. on the Alleviation of Joint Pain: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. Life (Basel). 2024;14(9):1136. PMID: 39337919. DOI: 10.3390/life14091136.
checked
Reference 2
checked
Draft and rewrite: Codex (AI) · Verification: Codex blind grading and adversarial audit · Final adjudication: Claude
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-07-16 · Corrections: none

Cite this verdict

Does Lilium lancifolium extract improve joint discomfort and function? Evidence Grade C card
[Chamgap] Does Lilium lancifolium extract improve joint discomfort and function? — Evidence Grade C·48. 2 cited sources checked. Source: https://chamgap.com/en/verdicts/joint-bone/lilium-lancifolium-extract/ · CC BY 4.0

CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.

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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.