← Glossary
Evidence levels A / B / C
A rating of the strength of evidence for a specific claim, not the importance of a supplement or the size of an effect. A — reviews and meta-analyses, B — individual good RCTs, C — scarce data.
Section: How to read evidence
Sources for the definition
The definition rests on no numbers and needs no source.
Where it is used
The term is used in the calculator, the supplements sections and pharmacology. Back to the glossary or open the methodology in the app.