Evidence standards
What each level of proof actually means, and which of the 69 compounds in this library meet it. Select a standard to see what remains — and what falls below it.
A medicines regulator has examined the full dossier — manufacturing, pharmacology, trial data — and permitted sale for a defined use. It is the highest standard on this page, and it is narrower than it sounds: an approval covers one indication, in one population, at one dose. A compound approved for obesity has not been approved for anything else, and the approval says nothing about uses outside it.
Compounds below the selected standard stay listed, faded. They have not been ruled out — they sit below the line currently selected.
These levels describe the strength of the published evidence behind a compound. They do not describe how promising it is, how well it works, or how it compares to anything else. A compound does not pass or fail — its literature either meets a given standard or it does not, and a compound sitting at the weakest level may simply be early rather than disproven.
A level is also never stronger than the guide beneath it. Every classification was made by reading the compound’s own page and its cited studies. If you want the reasoning rather than the label, the guide is where it lives — and how to read peptide research explains what to look for once you are there.