tirzepatide lowered HbA 1c by 2.01 to 2.30 percentage points versus 1.86 for semaglutide, meeting non-inferiority and superiority, with greater weight loss as well
Contrasting with these actions of GIPR activation to reduce food intake, Gipr knockout (KO) mice, and humans with impaired function GIPR variants, are protected against obesity, also probably through a central effect, as similar observations were made in global KO mice or mice lacking Gipr in nestin, synapsin or VGAT-expressing cells 4,5,9,10,11,12
This slower, sustained absorption makes IM shots well suited for steady maintenance rather than acute correction
[2] Weiss JB, Phillips CJ, Malin EW, Gorantla VS, Harding JW, Salgar SK
Delta-sleep-inducing peptide (DSIP): a review
Even in people without overt deficiency, B12 injections can correct subclinical insufficiency more rapidly than oral supplementation