Understanding Effectiveness Scores
Our effectiveness scoring system is based on scientific research and evidence. Each health outcome is rated on a scale of 1-10, with higher scores indicating stronger scientific support for the supplement's effectiveness.
- Score 10/10
- Ample scientific research demonstrates that the supplement is both highly effective and safe for long-term use.
- Score 9/10
- Strong scientific evidence supports the supplement's effectiveness, but some minor gaps in research remain (e.g., limited long-term studies or specific populations).
- Score 8/10
- Solid evidence suggests the supplement is effective, but research is not as extensive as higher levels
- Score 7/10
- Moderate evidence shows the supplement is effective for certain purposes, with limited population studies
- Score 6/10
- Some evidence supports the supplement's effectiveness, but research is mixed
- Score 5/10
- Limited evidence of effectiveness; may have potential benefits, but more research is needed
- Score 4/10
- Minimal research on effectiveness
- Score 3/10
- Inconclusive results regarding effectiveness
- Score 2/10
- No scientific evidence supports effectiveness
- Score 1/10
- Scientific evidence concludes that supplement is ineffective for purpose
Peptides are rated differently, on a five-state evidence rating rather than a 1-10 score. Read about evidence ratings for peptides.
How We Rate Supplements
Our ratings are based on peer-reviewed scientific studies, clinical trials, and meta-analyses. We consider factors such as study quality, sample size, reproducibility, and the overall body of evidence.
Explore supplements to see these ratings in action, or search for a specific supplement.