Popular peptides
The ingredients that show up again and again in serums, eye creams, scalp treatments, and supplement aisles.
Semaglutide
A GLP-1 receptor agonist peptide drug approved for type 2 diabetes and chronic weight management.
Tirzepatide
A dual GIP and GLP-1 receptor agonist with strong weight-loss and glycemic data in trials.
Liraglutide
An earlier daily-injection GLP-1 agonist—still used for diabetes and weight loss.
Exenatide
The first approved GLP-1 mimetic—derived from Gila monster saliva peptide exendin-4.
KPV
A tripeptide fragment of alpha-MSH studied for colitis and gut lining repair.
LL-37
The only human cathelicidin—a host-defense peptide with antimicrobial and immune-modulating roles in the gut and skin.