[16] [17] The term "pernicious" means "deadly", and this term came into use because, before the availability of treatment, the disease was often fatal
However, if the FDA ultimately reclassifies them and they are produced by compounding pharmacies in the U.S., clinicians would have discretion to write prescriptions outside of those narrow indications
Sterile water preparations should be used within 24-48 hours
While oral supplements might be easier for some, peptides frequently degrade in the stomach, which makes them unreliable
Overview In 2025, as peptide research becomes increasingly specialized, investigators continue evaluating alternate delivery formats to refine pharmacokinetic predictability
Compounded MIC B12 injections are not FDA-approved