Comparison of semaglutide, tirzepatide, retatrutide
semaglutide thirzepatide retatruticde Mechanism of action: Semaglutide, which is an analog of GLP-1 (glucagon-like peptide-1), meaning that it mimics the action of a naturally occurring hormone in the body that helps regulate blood sugar levels. Semaglutide increases insulin secretion when blood sugar levels are high, and decreases glucagon production. Mechanism of