As of 2025, compounding pharmacies cannot legally prepare compounded versions of currently marketed Schedule 4 peptide therapeutics (semaglutide, tirzepatide, liraglutide) unless a genuine documented clinical reason, such as allergy to an excipient in the registered product, justifies the compounded preparation for an individual patient
A recent analysis of FDA adverse event reporting system (FAERS) data from 2004 to 2020 revealed a notable association between GLP-1 RAs and malignant pancreatic neoplasms (proportional reporting ratio [PRR], 9.86) [52]
Statements Author contributions WL: Conceptualization, Data curation, Formal Analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing original draft, Writing review and editing
No single peptide addresses all of these simultaneously
Tan 2008)