Full peptide directory
All 7 peptides in this guide—A–Z crawlable index with summaries and label names.
Exenatide
GLP-1 agonist
Byetta · Bydureon · Exendin-4 analog
The first approved GLP-1 mimetic—derived from Gila monster saliva peptide exendin-4.
KPV
Gut inflammation
Lys-Pro-Val · Alpha-MSH fragment
A tripeptide fragment of alpha-MSH studied for colitis and gut lining repair.
LL-37
Antimicrobial
Cathelicidin · hCAP18 fragment
The only human cathelicidin—a host-defense peptide with antimicrobial and immune-modulating roles in the gut and skin.
Liraglutide
GLP-1 agonist
Saxenda · Victoza · Daily GLP-1
An earlier daily-injection GLP-1 agonist—still used for diabetes and weight loss.
Retatrutide
GLP-1 agonist
LY3437943 · Triple agonist
A once-weekly GLP-1/GIP/glucagon receptor triple agonist in late-stage trials for obesity—next-gen metabolic peptide drug.
Semaglutide
GLP-1 agonist
Ozempic · Wegovy · GLP-1 receptor agonist
A GLP-1 receptor agonist peptide drug approved for type 2 diabetes and chronic weight management.
Tirzepatide
GLP-1 / GIP agonist
Mounjaro · Zepbound · Dual GIP/GLP-1 agonist
A dual GIP and GLP-1 receptor agonist with strong weight-loss and glycemic data in trials.