The article explains that tirzepatide is a synthetic peptide built to bind both the GIP and GLP-1 receptors, and that peptide compounds are sensitive to heat, light and pH changes
What makes enlicitide particularly historic is its structural engineering: as a macrocyclic peptide, it defies the long-standing biopharmaceutical belief that large peptide therapeutics are too fragile to achieve effective oral bioavailability
All published data to date is in animal or in vitro models
However, HFD-feeding has been shown to induce alpha-cell hyperplasia prior to the expansion of beta-cell mass in mice (17, 100), and similarly, studies performed in normoglycemic non-human primates demonstrate that alpha-cell mass was more significantly augmented in response to the increased duration and severity of obesity than that of beta-cells (101)
Physiological mechanisms for the increase in renal solute-free water clearance by a glucagon-like peptide-1 mimetic
The most notable disappointment was CagriSema, an experimental obesity drug