Editorial policy
1. No unsourced claims
Every statement about efficacy, quality, or safety must cite a source in this site's study database. Sources outside the database are not cited.
2. Both sides shown
Where evidence is mixed (e.g., creatine and cognition), positive and negative findings are presented together.
3. Regulated phrasing
No disease prevention/treatment claims, no drug-like phrasing, no '100% guaranteed'. Efficacy statements are capped at 'may help' level, per Korean labeling/advertising law.
4. Regulatory notices
Ingredients not approved in Korea (NMN) carry a notice of that status and distribution route on all related pages.
5. Conflicts of interest and scoring
KNI and EGA share ownership and management. We disclose when EGA products are included, publish weights and cut-offs before scoring, and apply the same criteria to all products. Scores are presented with their underlying evidence.
6. Corrections
Errors are corrected promptly; significant corrections leave a visible note. All core pages show a last-reviewed date.