The MHRA has issued safety advice about a very rare eye condition called non-arteritic anterior ischemic optic neuropathy, or NAION, reported with semaglutide
[8] With that framing set, the sections below compare the two on structure, mechanism, regulatory status, human evidence, safety, and the single most important caveat of all: no published trial has ever compared them head-to-head
Pretty much all regions did well, with maybe the exception of China
Mechanism differences GLP-1 medications like semaglutide and tirzepatide are modified versions of the GLP-1 molecule itself
Rybelsus (semaglutide) [package insert]
Mice that selectively lack GLUT4 in adipose tissue have normal adipose tissue mass but develop glucose intolerance and hyperinsulinemia [27]