Chen S, Zhou M, Sun J, Guo A, Fernando RL, Chen Y et al (2019) DPP-4 inhibitor improves learning and memory deficits and AD-like neurodegeneration by modulating the GLP-1 signaling
The two values are comparable both from low-receptor-density cAMP assays (Coskun 2022 explicitly used Willard 2020's method), with a small cross-lab offset (~1.2, gauged from native-ligand controls) so treat the ~16 as a ratio rather than an exact multiple
However, these synthetic versions are engineered to resist breakdown by the DPP-4 enzyme that rapidly degrades natural GLP-1, remain active in the bloodstream for much longer periods (days to weeks versus minutes for natural GLP-1), and achieve blood concentrations far higher than the body naturally produces
Do not use Mounjaro if you or any of your family have ever had a type of thyroid cancer called medullary thyroid carcinoma (MTC)
Chanarin, 2000)