Hair loss is usually due to rapid weight loss or low nutrition, though some reports suggest a possible link between GLP-1s and alopecia

In those early days, several DPP-4 inhibitors had been described ( in vivo DPP-4 inhibition was associated with enhanced intact GLP-1 responses to glucose challenges ( Metabolic Effects of DPP-4 Related to Its Enzymatic Activity Despite DPP-4 having a relatively restricted substrate preference (Figure 1), a large number of peptides, proteins, and chemokines still fulfill the criteria and could be predicted to be suitable substrates, and indeed, many have been shown to be cleaved by DPP-4 in pharmacological kinetic, in vitro or animal studies, often using high substrate concentrations ( can cleave a substrate in vitro does not necessarily mean that DPP-4 plays an important physiological role in regulating concentrations and/or modulating biological activity of the endogenous molecules, particularly in humans and, for many of these putative substrates, there is little, if any experimental evidence to show that DPP-4 does actually cleave them in vivo and/or whether this has any physiological consequence

Add yogurt and milk when blending, or freeze the whole mix flat if you prefer
You can change your injection day for tirzepatide as long as its been at least 3 days (72 hours) since your last dose
Am J Physiol 265: L374381