These often contain empty calories and added sugar, which lack nutritional value
Newer injectable peptides sold through the "grey market" FDA approval for peptides, such as insulin and GLP1s, ensures oversight of how these medications are manufactured and distributed
And because each swap replaced something you were already eating, it sticks
DOI: 10.7759/cureus.45279
resbiotic makes this distinction clear on their packaging and marketing materials, though the name "GLP-1 Postbiotic" understandably creates confusion for people who associate GLP-1 with medications like compounded semaglutide or compounded tirzepatide
The most obvious signs are visual changes: look for any cloudiness, discoloration, or small particles floating in the solution