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PeptideHormone

Maridebart cafraglutide vs Retatrutide

GLP-1 agonism paired with GIP receptor antagonism — the opposite GIP direction to tirzepatide. An investigational GIP/GLP-1/glucagon triple receptor agonist. Side by side: type, evidence tier, receptor, molecular weight, and half-life — the same fields as each monograph, rearranged so the engineering difference is visible.

Maridebart cafraglutide
MariTide
Retatrutide
Also known as
TypeAnalogAnalog
EvidenceInvestigationalInvestigational
FamilyIncretins & metabolicIncretins & metabolic
ClassGLP-1 agonist–GIP-antagonist peptide–antibody conjugateGIP/GLP-1/glucagon triple agonist (acylated peptide)
ReceptorGLP-1 receptor (agonist) + GIP receptor (antagonist)GIP + GLP-1 + glucagon receptors
Molecular weight150,000 Da4,900 Da
Half-life
~21 days (monthly dosing)
Model dosing
Based onGlucagon-like peptide-1Glucagon-like peptide-1

Half-life bars are on a logarithmic scale across the molecules shown. Reference values for the native or representative form — educational only, not medical or dosing advice.

Common questions

What is the difference between Maridebart cafraglutide and Retatrutide?
Maridebart cafraglutide is an engineered analog based on Glucagon-like peptide-1; Retatrutide is an engineered analog based on Glucagon-like peptide-1. Maridebart cafraglutide signals at GLP-1 receptor (agonist) + GIP receptor (antagonist); Retatrutide signals at GIP + GLP-1 + glucagon receptors.
How do the half-lives of MariTide and Retatrutide compare?
The reported circulating half-life of Maridebart cafraglutide is ~21 days (monthly dosing); Retatrutide is ~6 days. These are reference values for the native or representative form — educational only, not dosing advice.

Prefer the other order? Retatrutide vs Maridebart cafraglutide. Or open the interactive comparison tool to add more molecules.