Setmelanotide is a MC4R-selective disulfide-cyclized octapeptide that incorporates several noncanonical amino acids ( Figure 2 ) (78)
Baseline and ongoing monitoring: Before initiating GLP-1/GIP therapy, consider measuring baseline B12 levels, particularly in patients concurrently taking metformin, those with previous bariatric surgery, individuals following plant-based diets, or those with malabsorption conditions
Patients pursuing budget-conscious general GH support sometimes default to Sermorelin for that reason
Others participate mostly to maintain coverage, citing the long timelines and overloaded dietitian scheduling as common pain points
Purchasing these compounds from unregulated online sources often labelled as 'research chemicals' or 'not for human use' does not circumvent legal or safety obligations
This aligns with observations made when the GLP-1 albumin fusions were cleaved at the C-terminal end upon exposure to CPA