Retatrutide has higher rates of nausea, diarrhea, and vomiting than tirzepatide
However, higher doses of liraglutide and Ex-4 were necessary in rats with subdiaphragmatic vagal deafferentation suggesting that vagal afferent neurons contribute to the suppression of food intake induced by peripherally administered GLP-1R mimetics but other brain regions are also involved in mediating this action (Kanoski et al., 2011)
doi: 10.1016/j.dsx.2018.03.002 44 McCleanPLHlscherC
The mean percentage change in body weight was 1.6% with liraglutide and 10.0% with placebo, with an estimated difference of 8.4 percentage points (95% CI, 13.4 to 3.3
Additionally, GLP-1 receptor agonists act on appetite-regulating centers in the hypothalamus, reducing hunger signals and promoting weight loss
These effects may be mediated by the upregulation of mRNA expression of tight junction proteins in intestinal cells [23] [24]