Topic hub

Peptides A–Z: The Reference Library

Every compound we cover, with its safety, legality and evidence on one page each.

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The section index below is generated from the keyword map, so it is accurate regardless.

In this section

The reference library

Pillar

A peptide is a short chain of amino acids. That plain fact covers everything from collagen powder to prescription GLP-1 medicines.

Pillar

Plain-language definitions for the regulatory, clinical and pharmacological terms used across this site.

Reference

BPC-157 is not FDA-approved for any use. Here is what it is, what the evidence shows, and where it sits legally.

Reference

Semaglutide is an FDA-approved GLP-1 receptor agonist. Compounded versions are a different thing with a different status.

Reference

Tirzepatide is an FDA-approved dual GIP/GLP-1 agonist. What it is approved for, and what it is not.

Reference

TB-500 is not FDA-approved for any human use and is prohibited in sport. What the research actually covers.

Reference

Collagen peptides are a regulated food supplement, not a drug — which is why the evidence question differs from every other compound here.