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📚 200+ supplements  ·  Evidence-graded  ·  Embeddable

Supplement Evidence Database

200+ supplements graded across RCT count, effect size, safety profile, and cost-effectiveness. The most comprehensive free supplement evidence database for consumers, clinicians, and researchers.

200+Ingredients graded
5Dimensions scored
FreeEmbeddable

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Ingredient Primary Use Grade Evidence Safety Value Typical Dose
Methodology: Evidence score = composite of human RCT count (weighted for size), meta-analysis inclusion, effect size consistency, and replication. Safety score = reported adverse event profile, drug interactions, and upper limit data. Value score = evidence-to-cost ratio at standard retail pricing. Grades: A = strong (multiple large RCTs, meta-analyses), B = good (several RCTs, consistent findings), C = preliminary (small trials or mixed results), D = weak/no evidence. Updated quarterly. Cite as: BestSupplements.best Evidence Database (2026).
How is the evidence grade different from the evidence score?
The evidence grade (A/B/C/D) is a categorical classification of overall evidence quality, similar to GRADE methodology. The evidence score (0–100) is a continuous measure that allows fine-grained comparison within a grade. Two Grade B supplements can score 78 vs 55 — both have "good evidence" but one has more consistent, replicated findings. The score helps you prioritise within a grade.
Can I embed this database on my website?
Yes — this database is freely embeddable with attribution. Use this code on your site: <iframe src="https://bestsupplements.best/tools/supplement-evidence-database/?embed=1" width="100%" height="600" frameborder="0"></iframe>. Attribution required: "Data: BestSupplements.best Evidence Database 2026" with a link back to this page.