dpp4 and glp 1 used together The mechanism of action of GLP-1 analogs (DPP-4 resistant). DPP-4 = The Impact of Dipeptidyl-peptidase 4

Data ( c, d, e, g, h, i, j ) are shown as box-and-whisker plots: boxes indicate the 25th75th percentiles, central lines indicate medians, and whiskers indicate minimum to maximum values

In stark contrast, dietary supplements marketed as "GLP-1" products are regulated under the Dietary Supplement Health and Education Act (DSHEA) of 1994, which places the burden of safety on manufacturers rather than requiring pre-market approval

Adding glucagon receptor (GCGR) agonism to the dual GLP-1R/GIPR profile introduces a mechanism that neither of the predecessor compounds can produce: direct upregulation of energy expenditure through hepatic and thermogenic pathways

JAMA 333 (8), 694700 (2025)

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