How we rate the research

What each badge means

Approved medicine

The FDA has approved at least one version of it as a medicine for a specific use, after large studies in people.

Tested in people

Real studies in people have been published, but nothing is approved. These are usually small, early studies.

Animal studies only

The research is in animals. There may also be a few loose reports from people, but no proper study.

Very early research

The work is on cells in a lab dish or tissue samples, often from one lab only, with nobody else repeating it yet.

What we include

• A study has to be published in a real journal and be about the peptide itself.
• Every study gets a short plain line, like "Rat study, 2016", so you can tell what kind of research it is before you open it.
• Trials show their registry number, stage, current status and what was being treated.
• For sellers we record only things we can check: whether they publish test results from an outside lab, and where they say orders ship from.

Where the data comes from

Everything on the site is entered by hand and reviewed before it goes live. Paid listings are labeled in plain text wherever they show up, and they never change a badge or which studies we list.